Question

Sum of shelly and her mothers age is 63 years four years back her mother age was 4 times that of shelley age at that time what percentage of shelly mother

Answer 1

Answer:

➡️ Present age of Shelly 15 years
➡️Present age of Shelly's mother 48 years


Solution:
➖➖➖
Let the present age of Shelly = x years

age of Shelly's mother = y years

A.T.Q.

$x + y = 63 \: \: \: \: \: \: eq1$
four year back both are 4 year younger ie

Shelly's age (x-4) year

mother's age (y-4) year

$y - 4 = 4(x - 4) \\ \\ y - 4 = 4x - 16 \\ \\ - 4x + y = -16 + 4 \\ \\ 4x - y = 12 \: \: \: \: \: \: eq2$
add both equations 1 and 2

$5x = 75 \\ \\ x = \frac{75}{5} \\ \\ x= 15$
so

$y = 63 - 15 \\ \\ y = 48$
present age of Shelly is 15 years

her mother is 48 years

Hope it helps you.