Question

The ratio of present ages of Ramita and Satyajit is 9:7. After 9 years the ratio of their ages will be 5:4. What is Ramita's present age?

A) 81 B) 63 C) 56 D) 80

Answer 1

Answer:

Ramita's present age is  A)81.

Step-by-step explanation:

9:7 +9yrs=5:4

let the present ages are:

9x:7x ----after 9yrs---->9x+9:7x+9 =5:4

=>9x+9/7x+9=5/4

=>x=9

therefore the present age of Ramita is 9x=9*9=81.

Answer 2

Step-by-step explanation:

let both ages be x years

present age :

ramita:9x

Satyajit :7x

after 9 years that mean we will add 9 to both of their ages

after 9 years:

ramita :9x+9=5

Satyajit:7x+9=4

now we will solve question

9x+9/7x+9=5/4

4*(9x+9)=5*(7x+9)

36x+36=35x+45

36x-35x=45-36

x =9

ramita present age=9*9=81