336
Q:

# A sum of Rs.312 was divided among 100 boys and girls in such a way that the boy gets Rs.3.60 and each girl Rs. 2.40 the number of girls is

 A) 35 B) 40 C) 45 D) 50

Explanation:

Step (i): Let x be the number of boys and y be the number of girls.
Given total number of boys and girls = 100
x+y=100 -------------- (i)

Step (ii): A boy gets Rs. 3.60 and a girl gets Rs. 2.40
The amount given to 100 boys and girls = Rs. 312
3.60x + 2.40y = 312 -------------- (ii)

Step (iii):
Solving (i) and (ii)
3.60x + 3.60y = 360 --------- Multiply (i) by 3.60
3.60x + 2.40y = 312 --------- (ii)
1.20y = 48
y = 48 / 1.20
= 40

$\inline \fn_jvn \Rightarrow$ Number of girls = 40

Q:

If (3/2)X = (5/7)Y = (6/5)Z, then what is X : Y : Z?

 A) 105 : 50 : 84 B) 24 : 25 : 32 C) 15 : 21 : 25 D) 20 : 42 : 25

Explanation:

Filed Under: Ratios and Proportions
Exam Prep: Bank Exams

2 6856
Q:

If 3A = 2B = C, then A : B : C = ?

 A) 6 : 2 : 3 B) 1/3 : 1/2 : 1 C) 3 : 2 : 1 D) 1 : 3 : 2

Explanation:

Filed Under: Ratios and Proportions
Exam Prep: Bank Exams

4 762
Q:

The ratio of the number of marbles that Pulak and Menaja had was 5:9 while the ratio of the number of marbles that Jairam and Menaja had was 7:18. What is the ratio of the number of marbles that Pulak and Jairam had?

 A) 10:7 B) 2:3 C) 5:7 D) 7:5

Explanation:

Filed Under: Ratios and Proportions
Exam Prep: Bank Exams

4 665
Q:

Two numbers are in ratio 3:4. When 3 is subtracted from both the numbers, the ratio becomes 2:3. Find the sum of the numbers.

 A) 16 B) 20 C) 21 D) 22

Explanation:

Filed Under: Ratios and Proportions
Exam Prep: Bank Exams

8 683
Q:

If 3/5 of x is equal to 4/9 of y, then what is the ratio of x and y?

 A) 11 : 15 B) 15 : 23 C) 20 : 27 D) 14 : 25

Explanation:

Filed Under: Ratios and Proportions
Exam Prep: Bank Exams

7 7258
Q:

If p : q : r = 2 : 3 : 5, then what will be the ratio of (p + q + r) : (3p + q – r)?

 A) 5 : 2 B) 10 : 17 C) 9 : 4 D) 5 : 4

Explanation:

Filed Under: Ratios and Proportions
Exam Prep: Bank Exams

3 5514
Q:

Three triangles are marked out of a bigger triangle at the three vertices such that each side of each of the smaller triangles is one-third as long as each corresponding side of the bigger triangle. The ratio of the area of the three small triangles taken together to that of the rest of the bigger triangle is ?

 A) 1:2 B) 1:3 C) 3:1 D) 1:9

Explanation:

Filed Under: Ratios and Proportions
Exam Prep: Bank Exams

5 655
Q:

If w : 0.80 :: 9 : 6, w = ?

 A) 2.5 B) 1.1 C) 3.3 D) 1.2