Wendy had twice the number of rubber bricks as Tom. Wendy used all her bricks to build 8 identical figurines. Tom used all his bricks to build 6 identical figurines. Wendy used 9 more bricks than Tom for each figurine. How many bricks did Tom have?
| |
Wendy |
Tom |
| Number |
8 |
6 |
| Value |
1 u + 9 |
1 u |
| Total value |
8 u + 72 |
6 u |
Number of rubber bricks that Tom used for each figurine = 1 u
Number of rubber bricks that Wendy used for each figurine = 1 u + 9
Number of rubber bricks that Tom had
= 6 x 1 u
= 6 u
Number of rubber bricks that Wendy had
= 8 x (1 u + 9)
= 8 u + 72
Wendy had twice the number of rubber bricks as Tom.
2 x 6 u = 8 u + 72
12 u = 8 u + 72
12 u - 8 u = 72
4 u = 72
1 u = 72 ÷ 4 = 18
Number of bricks that Tom had
= 6 u
= 6 x 18
= 108
Answer(s): 108
