8
Q:

# One-third of the boys and one-half of the girls of a college participated in a sport. If the number of participating students is 300, out of which 100 are boys. What is the total number of students in the college ?

 A) 550 B) 575 C) 625 D) 700

Explanation:

Let number of boys = B

Number of girls = G

From the given data,

1B/3 + 1G/2 = 300

But given B/3 = 100

=> B = 300

G/2 = 300 - 100

G = 200 x 2

=> G = 400

Therefore, total number of students in the college = B + G = 700.

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.

2 340
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.

3 420
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.

8 406
Q:

80% of 900 + ${\mathbf{16}}^{\mathbf{2}}$ 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

5 325
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.

1 554
Q:

Mohan spends 23% of an amount of money on an insurance policy, 33% on food, 19% on children’s education and 16% on recreation. He deposits the remaining amount of Rs. 504 in bank. How much amount does he spend on food and insurance policy together?

 A) Rs. 2326 B) Rs. 5876 C) Rs. 1741 D) Rs. 3136

Explanation:

Let total amount = Rs. P

Total expenditure = (23 + 33 + 19 + 16)% of P = 91%ofP

Remaining money = (100 - 91)% of P = 9% of P

But given in the question that,

9% of P = 504

9p/100 = 504

=> P = 50400/9

=> P = Rs. 5600

Required money spent on Food & Insurance = 23 + 33 %

= 56% of 5600

= 56 x 5600/100 = 56 x 56 = Rs. 3136

4 553
Q:

Rs. 69 were divided among 115 family members so that each lady gets 50 paise less than each gentleman, and each gentleman received twice the paise as each lady received. Find the number of  gentlemen in the family?

 A) 23 B) 92 C) 48 D) 52

Explanation:

Total number of female members = 115

Let the number of males = x

Number of females = y

=> x + y = 115  ......(1)

According to the given data,

x + y(0.50) = 69 ......(2)

From (1) & (2), we get

0.5y = 46

=> y = 46 x 2 = 92

=> x = 115 - 92 = 23

Hence, required number of gentlemen in the family = x = 23.

3 715
Q:

30% of 500 rupees is?

 A) Rs. 180 B) Rs. 150 C) Rs. 120 D) Rs. 240

Explanation:

Given 30% of 500

Hence, 30% of Rs. 500 = Rs. 150.