Sharif is 12 yrs old. He is three times older than Kashem. What will be age of Sharif when he is two times older than Kashem?
সঠিক উত্তর: Option A
sharif's age 12 year kashem's age = 12/3=4 yrs suppose, after x years sharifs age would be double of kashems age here,
12+x=2(x+4) or, x=4 so, sharif's age = 12+4 = 16