the sum of present age of abe and the age before 7 years is 29 . 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 ) = 29 2 x - 7 = 29 2 x = 29 + 7 x = 36 / 2 x = 18 z = x + 7 = 18 + 7 = 25 answer : a"
add(divide(add(29, 7), const_2), 7)