Question

the sun of fathers age and twice the age of his son is 70. if we double the age of the and add it to the age of his son the sum is 95. find their present age

Answer 1

let father's age be x and sons age be y
According to 1st condition
x+2y=70
According to 2nd condition
2x+y=90
Now multiply equation 1 by 2 then subtract equation 2 and 3 and u will get answer