Nora had four times the number of wooden blocks as Lee. Nora used all her blocks to build 7 identical cars. Lee used all his blocks to build 4 identical cars. Nora used 9 more blocks than Lee for each car. How many blocks did Lee have?
| |
Nora |
Lee |
| Number |
7 |
4 |
| Value |
1 u + 9 |
1 u |
| Total value |
7 u + 63 |
4 u |
Number of wooden blocks that Lee used for each car = 1 u
Number of wooden blocks that Nora used for each car = 1 u + 9
Number of wooden blocks that Lee had
= 4 x 1 u
= 4 u
Number of wooden blocks that Nora had
= 7 x (1 u + 9)
= 7 u + 63
Nora had four times the number of wooden blocks as Lee.
4 x 4 u = 7 u + 63
16 u = 7 u + 63
16 u - 7 u = 63
9 u = 63
1 u = 63 ÷ 9 = 7
Number of blocks that Lee had
= 4 u
= 4 x 7
= 28
Answer(s): 28
