jacob is 10 years old . he is 5 times as old as his brother . how old will jacob be when he is twice as old ?
"j = 10 ; j = 5 b ; b = 10 / 5 = 2 ; twice as old so b = 2 ( now ) + ( 2 ) = 4 ; jacob is 10 + 4 = 14 answer : b"
multiply(10, 5)