Question

rakesh age is 10% that of mohans age and 20% that of shyam age what percentage of mohan age is shyam age,

Answer 1

Let Mohan's age = M
Rakesh's age = R
Shyam's age = S

Given that R is 10% of M
⇒ R = 10/100 M = 0.1M -----------[1]
R is 20% of S
⇒ R = 20/100 S = 0.2S -----------[2]
from [1] and [2],
0.1M = 0.2S
⇒ M = 2S ------------------------------[3]

S/M ×100 = S/2S × 100 = 50%
So Shyam's age is 50% of Mohan's age.