the sum of present age of abe and the age before 7 years is 35 . find the present age of abe . what will be his age after 7 years ?
present age = x before 7 yrs , y = x - 7 after 7 yrs , z = x + 7 by the qn , x + ( x - 7 ) = 35 2 x - 7 = 35 2 x = 35 + 7 x = 42 / 2 x = 21 z = x + 7 = 21 + 7 = 28 answer : d
add(divide(add(35, 7), const_2), 7)