100+ Percentage Questions and Answers Pdf - 2

Question: 6

What percent is 1 minute and 12 seconds of an hour?

(A) 2%

(B) 10%

(C) 12%

(D) 20%

Ans: A

1 min 12 sec = $$1{12}/{60}$$ = $$1{1}/{5}$$ min = $${6}/{5}$$ min.

1 hour = 60 min.

∴ Required percentage = $$({6}/{5} × {1}/{60} × 100)%$$ = 2%.

Question: 7

Kamal has 160 toffees. He gave 5% toffees to Ravi, 15% toffees to Anita and one fourth of the toffees to Gagan. How many toffees are left with Kamal after the distribution?

(A) 78

(B) 88

(C) 89

(D) 99

Ans: B

Number of toffees distributed = 5% of 160 + 15% of 160 + $${1}/{4}$$of 160

= $$({5}/{100} × 160)$$ + $$({15}/{100} × 160)$$ + $$(160 × {1}/{4})$$

= 8 + 24 + 40 = 72.

∴ Number of toffees left behind = 160 – 72 = 88.

Question: 8

In an examination, the percentage of students qualified to the number of students appeared from school A is 70%. In school B, the number of students appeared is 20% more than the students appeared from school A and the number of students qualified from school B is 50% more than the students qualified from school A. What is the percentage of students qualified to the number of students appeared from school B?

(A) 30%

(B) 70%

(C) 87.5%

(D) 97.5%

Ans: C

Let number of students appeared from school A = 100.

Then, number of students qualified from school A = 70.

Number of students appeared from school B = 120.

Number of students qualified from school B = $$({150} / {100} × 70)$$ = 105.

∴ Required percentage = $$({105}/{120} × 100)$$% = 87.5%.

Question: 9

In a mixture of milk and water, the proportion of water by weight was 75%. If in the 60 gms mixture 15 gm of water was added, what would be the percentage of water?

(A) 70%

(B) 75%

(C) 80%

(D) 95%

Ans: C

Weight of water in 60 gms mixture

= 75% of 60 gm = $$({75}/{100} × 60)$$gm = 45gm.

Weight of water in 75 gms mixture = (45 + 15) gm = 60 gm.

∴ Required percentage = $$({60}/{75} × 100)$$% = 80%.

Question: 10

Half of 1 percent written as a decimal is

(A) 0.2

(B) 0.02

(C) 0.05

(D) 0.005

Ans: D

$${1}/{2}$$% = $$({1}/{2} × {1}/{100})$$ = $${0.5} / {100}$$ = 0.005.

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