the sum of 3 consecutive odd numbers is 20 more than the first of these numbers . what is the middle number ?
solution let the numbers be x , x + 2 , x + 4 then x , ( x + 2 ) + ( x + 4 ) = x + 20 ‹ = › 2 x = 14 ‹ = › x = 7 . therefore middle number = x + 2 = 9 . answer c
add(divide(subtract(20, add(const_2, const_4)), subtract(3, const_1)), const_2)