Question

THE AGE OF SAZID AND AHMAD ARE IN RATIO 7:5 TEN YEARS HENCE THE RATIO OF THEIR AGE WILL 9:7 FIND THEIR PRESENT AGE.

Answer 1

let the common factor be x
Sazid' s age is=7x and Ahmad's age is= 5x
After 10 years Sazid's age 7x+10 and Ahmad's age 5x+10
Asper question (7x+10)/(5x+10)=9/7
                     ⇒ 49x+70=45x+90
                     ⇒ 4x20
                     ⇒ x=5
Sazid's age is 7x= 35 and Ahmad's age is 5x=25