type 3 addition subtraction product on ratio & proportion Section-Wise Topic Notes With Detailed Explanation And Example Questions

Question : 1

If the product of two positive numbers is 1575 and their ratio is 7 : 9, then the greater number is

a) 135

b) 63

c) 35

d) 45

Question : 2

Three numbers are in the ratio $1/2 : 2/3 : 3/4$. The difference between the greatest and the smallest number is 36. The numbers are

a) 72, 84, 96

b) 72, 96, 108

c) 60, 72, 96

d) 72, 84, 108

Question : 3

The average of two numbers is 62. If 2 is added to the smallest number, the ratio between the numbers becomes 1 : 2. The difference of the numbers is

a) 84

b) 44

c) 40

d) 62

Question : 4

The ratio between a two - digit number and the sum of the digits of that number is 4 : 1. If the digit at the unit’s place is 3 more than the digit at the ten's place, then the number is

a) 36

b) 25

c) 69

d) 47

Question : 5

In a 45 litres mixture of milk and water, the ratio of the milk to water is 2 : 1. When some quantity of water is added to the mixture, this ratio becomes 1 : 2. The quantity of water added is

a) 35 litres

b) 45 litres

c) 21 litres

d) 10 litres

Question : 6

The sum of three numbers is 68. If the ratio of the first to the second be 2 : 3 and that of the second to the third be 5 : 3, then the second number is

a) 20

b) 48

c) 58

d) 30