100+ Percentage Questions and Answers for Competitive Exams - 3

 Question: 1

270 candidates appeared for an examination, of which 252 passed. The pass percentage is

(A) 80%

(B) 90%

(C) 93

1

3

(D) 94

1

2

View Answer

Ans: C

Pass percentage = (

252

270

×100)% = 

280

3

% = 93

1

3

%.

Question: 2

5 kg of metal A and 20 kg of metal B are mixed to form an alloy. The percentage of metal A in the alloy is

(A) 10%

(B) 20%

(C) 30%

(D) 40%

View Answer

Ans: B

Weight of metal A = 5 kg.

Total weight of the alloy = (5 + 20) kg = 25 kg.

Therefore, Required percentage = (

5

25

×100)% = 20%.

Question: 3

What is 25% of 25% equal to?

(A) 0.0625

(B) 0.00625

(C) 0.625

(D) 6.25

View Answer

Ans: A

25% of 25% = 

25

100

×

25

100

 = 

1

16

 = 0.0625.

Question: 4

If the price of a book is first decreased by 25% and then increased by 20%, then the net change in the price will be

(A) 5% increase

(B) 5% decrease

(C) 10% decrease

(D) 10% increase

View Answer

Ans: C

Let the original price be Rs. 100.

New final price

= 120% of (75% of Rs. 100)

= Rs. (

120

100

×

75

100

×100) = Rs. 90.

∴ Decrease = 10%.

Question: 5

The ratio 5 : 4 expressed as a percent equals

(A) 12.5%

(B) 40%

(C) 80%

(D) 125%

View Answer

Ans: A

5 : 4 = 

5

4

 = (

5

4

×100)% = 12.5%.

Question: 6

0.01 is what percent of 0.1?

(A) 10

(B) 100

(C) 200

(D) 300

View Answer

Ans: A

Required percentage = (

0.01

0.1

×100)% = (

1

10

×100)% = 10%.

Question: 7

A toy merchant announces 25% rebate in prices of balls. If one needs to have a rebate of Rs. 40, then how many balls each costing Rs. 32, he should purchase?

(A) 4

(B) 5

(C) 6

(D) 7

View Answer

Ans: B

Rebate on one ball = 25% of 32 = Rs. (

25

100

×32) = Rs. 8.

∴ Required number of balls = 

40

8

 = 5.

Question: 6

0.01 is what percent of 0.1?

(A) 10

(B) 100

(C) 200

(D) 300

View Answer

Ans: A

Required percentage = (

0.01

0.1

×100)% = (

1

10

×100)% = 10%.

Question: 7

A toy merchant announces 25% rebate in prices of balls. If one needs to have a rebate of Rs. 40, then how many balls each costing Rs. 32, he should purchase?

(A) 4

(B) 5

(C) 6

(D) 7

View Answer

Ans: B

Rebate on one ball = 25% of 32 = Rs. (

25

100

×32) = Rs. 8.

∴ Required number of balls = 

40

8

 = 5.