Question

19. A ten-foot-long board is cut into three pieces. The second piece is half as long as the first. The third piece is 4 feet longer than the second. How long is the first piece?



A. 1 feet

B. 2 feet

C. 2 feet

D. 3 feet

The answer is given by the teacher to us, but I want to know how to get the correct answer. Thank you.

Answer 1

If the smallest (2nd) piece is x, then just add up the lengths:

2x + x + x+4 = 10

now find x, and you can figure the length needed.