Question

please solve this question​

Answer 1

Answer:

Ramesh age=15

Rahim age=21

Step-by-step explanation:

let,

ramesh age =a

rahim age=b

so that,

by the question,

a/b=5/7

or, 7a=5b

or,7a-5b=0..........,(i)

again,

a+9=2(b-9)

or, a+9=2b-18

or, a-2b= -18-9

or, a-2b= -27..........(ii)

Multiply the 7 for equation (ii) and subtraction the equation (i) & (ii),

7a-5b=0

7a-14b= -189

-. + +

______________

0+9b = 189

b = 189/9

b= 21

putting the value b form equation (i)

7a-(5*21)=0

7a-105=0

7a=105

a=105/7

a=15