Question

The average of four consecutive even numbers a, b, c and d is 37. What is the product of a and c? 1520 1368 1292 1224

Answer 1

first number = x

second number = x +2

Third  = x + 4

Forth = x + 6

Average  =  (x + x + 2 + x + 4 + x + 6)/4 = 37

4x + 12 = 148

4x = 136

x = 34

product of a & c = (x) (x +4)  = 34 x 38 = 1292