type 7 finding sum difference product based ratio & proportion problems Practice Questions Answers Test with Solutions & More Shortcuts

Question : 26 [SSC CGL Tier-I 2014]

What number should be subtracted from both the terms of the ratio 11 : 15 so as to make it as 2 : 3 ?

a) 4

b) 5

c) 3

d) 2

Question : 27 [SSC CGL Tier-I 2016]

If the ratio of two numbers is 1 : 5 and their product is 320, then the difference between the squares of these two numbers is :

a) 1536

b) 1435

c) 1256

d) 1024

Question : 28 [SSC CGL Tier-1 2011]

What number should be added to or subtracted from each term of the ratio 17 : 24 so that it becomes equal to 1 : 2 ?

a) 7 is added

b) 10 is subtracted

c) 10 is added

d) 5 is subtracted

Question : 29 [SSC CGL Tier-II 2016]

The ratio of number of boys to the number of girls in a school of 432 pupils is 5 : 4. When some new boys and girls are admitted, the number of boys increase by 12 and the ratio of the boys to girls changes to 7 : 6. The number of new girls admitted is

a) 24

b) 20

c) 14

d) 12

Question : 30 [SSC Investigator 2010]

Two numbers are in the ratio 3 : 5. If each number is increased by 10, the ratio becomes 5 :7. The smaller number is

a) 15

b) 25

c) 12

d) 9