Xylia had five times the number of rubber bricks as Nick. Xylia used all her bricks to build 8 identical figurines. Nick used all his bricks to build 4 identical figurines. Xylia used 9 more bricks than Nick for each figurine. How many bricks did Nick have?

	Xylia	Nick
Number	8	4
Value	1 u + 9	1 u
Total value	8 u + 72	4 u

Number of rubber bricks that Nick used for each figurine = 1 u
Number of rubber bricks that Xylia used for each figurine = 1 u + 9

Number of rubber bricks that Nick had
= 4 x 1 u
= 4 u

Number of rubber bricks that Xylia had
= 8 x (1 u + 9)
= 8 u + 72

Xylia had five times the number of rubber bricks as Nick.

5 x 4 u = 8 u + 72
20 u = 8 u + 72
20 u - 8 u = 72
12 u = 72

1 u = 72 ÷ 12 = 6

Number of bricks that Nick had
= 4 u
= 4 x 6
= 24

Answer(s): 24