Question

ages of a brother and sister are in the ratio 4:3 after 3 year the sister will be twice as old as she is now.how old is the brother now.​

Answer 1

Answer:

let the present age of brother be x and of sister be y.

given: x/y= 4/3

3x = 4y ...(1)

Also y+3= 2y

y= 3

substitute in (1)

x=4

therefore the brother will be 4 year old now.