Question

Kamala is 4 times as old as her son.5 years ago her son was 1/7 of her age. What is Kamala's age now?

Answer 1

Answer:

KAMLA'S PRESENT AGE IS 40 YEARS

Step-by-step explanation:

LET THE PRESENT AGE OF SON = X YEARS

PRESENT AGE OF KAMLA = 4X. YEARS

ACCORDING TO QUESTION:

$(x - 5) = \frac{1}{7} (4x - 5) \\ \\ 7(x - 5) = 4x - 5 \\ \\ 7x - 35 = 4x - 5 \\ \\ 7x - 4x = 35 - 5 \\ \\ 3x = 30 \\ \\ therefore \: \: \: \: \: x = \frac{30}{10 } \\ \\ \\ \\ or \: \: \: \: \: x = 10 \\ \\ \\ hence \: present \: age \: of \: kamla \: \: \: is \: 4 \times 10 = 40 \: years$