Question

The average of four consecutive odd

numbers is 16. What is the product of
lowest and highest number?
(A) 247
(B) 255
(C) 221
(D) Data inadequate​

Answer 1

...the four consecutive odd numbers x, x+2, x+4 and x+6

Average = (x + x+2 + x+4 + x+6) / 4 = 16

(4x+12)/4=16

x+3 =16

x=16-3=13

the 4 odd numbers: 13; 15; 17; 19

product of lowest and highest number =

13*19=247