The average of four consecutive even numbers A, B, C and D respectively is 37, What is the product of A and C ?
Let the 4 even numbers be x, x+2, x+4, and x+6.
Average of 4 numbers = 37 => Sum of 4 numbers = 37*4 = 148
x+x+2+x+4+x+6 = 148
4x + 12 = 148
x = 136/4 = 34
A = 34 B = 36 C = 38 D = 40
Product of A and C = 34*38 = 1292.
Option C is the right answer.
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