Question

121 : 21 :: 100 : ? what is the number in question mark ?


How 10 is possible

Answer 1

Answer:

17.35

Step-by-step explanation:

Given 121 : 21 :: 100 : x

Given ratio as 121 : 21 is as is to 100 : x

In ratio and proportion, product of means is equal to product of extremes.

21 x 100 = 121 x x

121 x = 2100

x = 2100 / 121

x = 17.35