the sum of present age of abe and the age before 7 years is 27 . 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 ) = 27 2 x - 7 = 27 2 x = 27 + 7 x = 34 / 2 x = 17 z = x + 7 = 17 + 7 = 24 answer : b"
add(divide(add(27, 7), const_2), 7)