Practice the AP 7th Class Maths Bits with Answers Chapter 6 Ratio – Applications on a regular basis so that you can attempt exams with utmost confidence.
AP State Syllabus 7th Class Maths Bits 6th Lesson Ratio – Applications with Answers
Choose the correct answer.
Question 1.
In a class of 65 students, the ratio of girls and boys is 3: 2; then the number of girls are
A) 26
B) 39
C) 21
D) 44
Answer:
B) 39
Question 2.
Radha goes to market with a sum of ₹ 120 and spends there ₹ 45. Now the ratio of money with her and spent by her is
A) 3 : 5
B) 6 : 3
C) 5 : 3
D) 4 : 6
Answer:
C) 5 : 3
Question 3.
A sum is divided into two parts in the ratio 11 : 4. If the smaller part is ₹ 840 then the bigger part is
A) ₹ 2310
B) ₹ 3150
C) ₹ 2450
D) ₹ 5280
Answer:
A) ₹ 2310
Question 4.
If 3,8, x and 16 are in proportion the value of x is
A) 12
B) 4
C) 8
D) 6
Answer:
D) 6
Question 5.
The ratio of an angle and its complementary is 2: 7 then the smaller angle is
A) 70°
B) 20°
C) 60°
D)30°
Answer:
B) 20°
Question 6.
The side of an square is 5 units. If its side is doubled the ratio of areas of the original square and thus formed is
A) 1 : 4
B) 4 : 1
C) 2 : 1
D) 1 : 2
Answer:
A) 1 : 4
Question 7.
Divide ₹63 in the ratio of 4 : 5 = ……………..?
A) (28, 35)
B) (36, 37)
C) (36, 27)
D) (35, 28)
Answer:
A) (28, 35)
Question 8.
A sum of ₹11000 is divided in the ratio of 5 : 6 then the greater share is? (in₹)
A) 5000
B) 6000
C) 1000
D) 7000
Answer:
B) 6000
Question 9.
In a class of 40 students number of girls are 28 then the ratio of boys and girls is …………….
A) 4 : 7
B) 7 : 3
C) 3 : 7
D) 7 : 4
Answer:
C) 3 : 7
Question 10.
From the above sum the ratio of boys to the total class is ……………
A) 3 : 10
B) 10 : 3
C) 4 : 10
D) 4 : 9
Answer:
A) 3 : 10
Question 11.
The area of a rectangle is 600. If its length is 30, then the ratio of l: b is …………….
A) 3 : 4
B) 3 : 2
C) 3 : 5
D) 4 : 3
Answer:
B) 3 : 2
Question 12.
If 3 : 6 :: 12 : x ⇒ x = …………..?
A) 9
B) 18
C) 24
D) 15
Answer:
C) 24
Question 13.
If 4 : 3 :: x : 9 ⇒ x = ……………….
A) 16
B) 15
C) 12
D) 6
Answer:
C) 12
Question 14.
If the cost of 5 pens is 70, then the cost of 7 pens is ………………..
A) ₹84
B) ₹90
C) ₹112
D) ₹98
Answer:
D) ₹98
Question 15.
If 90 : x : : 60 : 10 ⇒ x = ?
A) 15
B) 20
C) 30
D) 45
Answer:
A) 15
Question 16.
The ratio of two complementary angles is 4 : 5 then its smaller angles?
A) 36°
B) 44°
C) 50°
D) 40°
Answer:
D) 40°
Question 17.
Out of 96 students 12 students were absent in a class. Then the ratio of present to absentees is …………….
A) 1 : 7
B) 7 : 1
C) 8 : 1
D) 9 : 1
Answer:
B) 7 : 1
Question 18.
From the above sum the percentage of students are present
A) 86.5%
B) 84.5%
C) 87.5%
D) 85.5%
Answer:
C) 87.5%
Question 19.
A bus covers a distance of 240 kms in 6hrs then its covers the distance in 11 hrs is ……………. (kms)
A) 440
B) 400
C) 360
D) 320
Answer:
A) 440
Question 20.
40% of 200 – 20% of 50 = ………………
A) 70
B) 90
C) 80
D) 60
Answer:
A) 70
Question 21.
70% of a number is 56, then the number is …………….?
A) 85
B) 90
C) 70
D) 80
Answer:
D) 80
Question 22.
If T = 4 years, P = ₹6500, A = ₹8840, then Rate of interest (R) = …………..%
A) 9%
B) 9.5%
C) 8%
D) 9.1%
Answer:
A) 9%
Question 23.
If P = ₹ 3000, R = 9% T = 2\(\frac {1}{2}\) y, then I = ………………?
A) ₹575
B) ₹685
C) ₹655
D) ₹675
Answer:
D) ₹675
Question 24.
If A = ₹ 15624, P = ₹12,600, R = 9% T = ……………?
A) 2\(\frac{1}{3}\)Y
B) 2\(\frac{2}{3}\)Y
C) 3\(\frac{1}{2}\)Y
D) 3\(\frac{2}{3}\)Y
Answer:
B) 2\(\frac{2}{3}\)Y
Question 25.
At what rate a sum triples itself in 8 years 4 months?
A) 30%
B) 18%
C) 12%
D) 24%
Answer:
D) 24%
Question 26.
The population of a village is 10,000 in the year 2012. The population increases 5% on every year then its population on 2015?
A) 11500
B) 11576
C)11570
D)11575
Answer:
A) 11500
Question 27.
Which of the following is in proportion?
A) 1 : 2 = 3 : 4
B) 4 : 11 = 7 : 8
C) 5 : 9 = 18 : 10
D) 32 : 64 = 6 : 12
Answer:
D) 32 : 64 = 6 : 12
Question 28.
Which of the following is not in proportion?
A) 4 : 11 = 2 : 5
B) 25 : 1 = 40 : 1.6
C) 90 : 30 :: 36 : 12
D) 22 : 11 : : 12 : 6
Answer:
A) 4 : 11 = 2 : 5
Question 29.
A road map represents 1 cm = 18 km then 72 km = …………….cm.
A) 14 cm
B) 4 cm
C) 8 cm
D) 2 cm
Answer:
B) 4 cm
Question 30.
The percentage of shaded portion is
A) 40%
B) 16%
O 30%
D) 25%
Answer:
D) 25%
Question 31.
From the above sum the percentage of unshaded portion is?
A) 75%
B) 70%
C) 80%
D) 85%
Answer:
A) 75%
Question 32.
Formula for simple interest is I = ………………?
A) \(\frac{\text { PTR }}{100}\)
B) \(\frac{\text { TR }}{\mathrm{P} \times 100}\)
C) \(\frac{\mathrm{PR}}{100 \times \mathrm{T}}\)
D) \(\frac{\mathrm{PT}}{100 \times \mathrm{R}}\)
Answer:
A) \(\frac{\text { PTR }}{100}\)
Question 33.
Compound interest (C.I) = ……………….?
A) A – P
B) A + P
C) P + I
D) P – I
Answer:
A) A – P
Question 34.
Amount = ………………..?
A) P + I
B) P -1
C) P × I
D) None
Answer:
A) P + I
Question 35.
S.P – C.P = ……………….?
A) loss
B) profit
C) M.P
D) None
Answer:
B) profit
Question 36.
Loss = ……………….?
A) S.P – C.P
B) S.P + C.P
C) C.P – S.P
D) None
Answer:
C) C.P – S.P
Question 37.
Gain % = ……………..?
A) \(\frac{\text { Profit }}{\text { S.P }}\) × 100
B) \(\frac{\text { Profit } \times \mathrm{C.P}}{100}\)
C) \(\frac{\text { Profit }}{\text { C.P }}\) × 100
D) \(\frac{\text { C.P }}{\text { Profit }}\) × 100
Answer:
C) \(\frac{\text { Profit }}{\text { C.P }}\) × 100
Question 38.
Percentage increase in price = ……………?
Answer:
Question 39.
Discount is calculated on ……………
A) C.P
B) Loss
C) S.P
D) Marked price
Answer:
D) Marked price
Question 40.
a : b and c : d are in proportion then
A) ad = bc
B) ac = bd
C) ab = cd
D) none
Answer:
A) ad = bc
Question 41.
A car takes 3\(\frac {1}{2}\) hours to cover a distance 2of 227.5 km then how much time does it take to cover 487.5 km ?
A) 5\(\frac {1}{2}\) hrs
B) 6\(\frac {1}{2}\) hrs
C) 7\(\frac {1}{2}\) hrs
D) 8\(\frac {1}{2}\) hrs
Answer:
C) 7\(\frac {1}{2}\) hrs
Question 42.
28% of a number is 168. Then 82% of it is
A) 438
B) 492
C) 600
D) 392
Answer:
B) 492
Question 43.
‘A’ sells a watch to ‘B’ at a gain of 10%. If B pays ₹ 330 for it; what is the cost price for
A?
A) ₹ 320
B) ₹ 340
C) ₹ 300
D) ₹ 310
Answer:
C) ₹ 300
Question 44.
Last year the price of a commodity was ₹ 80; this year the price goes up by ₹? 20. Find percentage increase.
A) 20%
B) 25%
C) 100%
D) 80%
Answer:
B) 25%
Question 45.
Out of 9000 voters of in a Krosur village 75% voted . Number of voters didn’t vote ?
A) 6750
B) 2500
C) 2250
D) 6250
Answer:
C) 2250
Question 46.
Sachin played 120 matches in his carrier. If he succeed 85% of matches, then number of matches he succeeded?
A) 112
B) 104
C) 98
D) 102
Answer:
D) 102
Question 47.
If C.P of 11 books is equal to S.P of 15 books then ………………?
A) 33\(\frac {1}{3}\)% – Loss
B) 33\(\frac {1}{3}\) % – Profit
C) 30% – Loss
D) 25% – Loss
Answer:
B) 33\(\frac {1}{3}\) % – Profit
Question 48.
An article is brought for ₹240 and sold it for ₹300 then the gain% is?
A) 30%
B) 25%
C) 24%
D) 35%
Answer:
A) 30%
Question 49.
Anji sold a land for ₹3,00,000 and gain 20% then how much did he purchase it?
A) 2,75,000
B) 2,25,000
C) 2,00,000
D) 2,50,000
Answer:
D) 2,50,000
Question 50.
The marked price of a cell phone is ₹5000 the shopkeeper allows a discount of 25% on it. Then its S.P = ………………?
A) ₹2750
B) ₹1250
C) ₹3750
D) ₹3250
Answer:
C) ₹3750
Question 51.
A dealer allows a discount of 10% and still gains by 10%. What should be the marked price if the cost price is ₹900?
A) ₹1100
B) ₹?1000
C) ₹1200
D) ₹800
Answer:
A) ₹1100