Question

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

Answer 1

Answer:

40 years

Explanation:

Let the age of her son be x Age of her son = x yrs. Age of kamla= 4x yrs. 5 yrs. Ago Age of her son= x-5 yrs. Age of kamla= (4x-5) according to question (x-5)=1\7(4x-5) 7(x-5)=4x-5 7x-35=4x-5 7x-4x= (-5)-35 35\3=30\3 x=10 Age of her son=x yrs. = 10 yrs. Age of kamla = 4x yrs. = 4×10 yrs. = 40 yrs. ANSWER= 40 yrs.

Answer 2

Explanation:

Answer:

40 years

Explanation:

Let be kamla's present age is K, and son's present age is S.

K=4s , equation 1

But son's age is 1/7 of kamla's age

So, (K-5)/7 = (S-5)/7 , equation 2

Let us simplify equation 2

hi

K-5=7S-35

K+35-5=7S

K+30=7S

Substituting equation 1

4S+30=7S

30=7S-4S

30=35

S=10

Therefore son's present age is 10.

So, Kamla's present age is

K=4S

=4×10

=40 years