Question

parvathi is 10 year younger than mahalakshmi . after x year the ratio of their ages will 4:5 .if the ratio between the present ages of parvathi and mahalakshmi 7:9 then find the value of x​

Answer 1

Parvathi present age be 'P'

Mahalakshmi present age be 'M'

Parvathi is 10yr younger than mahalakshmi

P=M-10---------------(1)

ratio of present ages of both is

P/M=7/9

P=7M/9-----------(2)

by eq(1) & (2)

P=35,M=45

after 'x'yr ratio of their ages is

(P+x)/(M+x)=4/5

put P=35,M=45

we get x=5yrs