4
Q:

# There are 1650 students in a college. The difference between the number of boys and girls in the college is 400. What is the percentage of girls in the college ?

 A) 49 B) 34 C) 43 D) 38

Explanation:

Let no. of boys be 'B' and no. of girls be 'G'

Here from given data,

B + G = 1650 .....(1)

B - G = 400 .....(2)

From (1) & (2), we get

2B = 2050

=> B = 1025

=> G = 1650 - 1025 = 625

Hence, the % of girls = 625 x 100/1650

=> 38% (approx).

Q:

82.5% of 2360?

 A) 1960 B) 1954 C) 1947 D) 1931

Explanation:

Given 82.5% of 2360

0 34
Q:

When the price of whear was increased by 32%, a family reduced its consumption in such a way that the expenditure on wheat was only 10% more than before. If 30 kg per month were consumed before, find the new monthly consumption of family?

 A) 27 kgs B) 25 kgs C) 24 kgs D) 21 kgs

Answer & Explanation Answer: B) 25 kgs

Explanation:

Initial wheat per kg cost be Rs. 100

Then, monthly expenditure of the family = 30 x 100 = 3000

After increase in cost,

Let P be new monthly consumption of family.

P x 132 = 110/100 x 3000

=> P = 25 kg.

0 226
Q:

12% of 70,000 is

 A) 8400 B) 7200 C) 6000 D) 5600

Explanation:

12% of 70,000

=> 12 x 70,000/100

=> 8400

Hence, 12% of 70,000 = 8,400

1 248
Q:

3 is what percent of 5?

 A) 45% B) 60% C) 72% D) 80%

Explanation:

Here it is asked that 3 is what percent of 5

Let 3 is K percent of 5.

=> K x 5/100 = 3

=> K = 300/5 = 60

Hence, 3 is 60% of 5.

5 837
Q:

of 259.99 = ? % of 1247.9

 A) 96 B) 100 C) 78 D) 88

Explanation:

Given

of 259.99 = ? % of 1247.9

24/5 x 260 = ? x 1248/100

? = 1248 x 100/1248

? = 100.

5 776
Q:

Which value is equal to 5% of 1,500?

 A) 35 B) 55 C) 75 D) 45

Explanation:

In the question it is asked for 5% of 1500

5 x 1500/100 = 15 x 5 = 75.

Hence, 5% of 1,500 is equal to 75.

10 716
Q:

80% of 900 + $162$ x 4 x ? =

 A) 0.5 B) 1 C) 4 D) 0

Explanation:

80x900/100 + 256 x 4 x ? = 1331 - 99

720 + 1024 x ? = 1232

? = 1232 - 720/1024

? = 512/1024 = 0.5

? = 0.5

8 669
Q:

What is 70 of 50?

 A) 35 B) 38 C) 42 D) 44

Explanation:

what is 70 of 50 means 70% of 50

Hence, 70 of 50 is 35.