Emma had four times the number of wooden blocks as Daniel. Emma used all her blocks to build 8 identical cars. Daniel used all his blocks to build 4 identical cars. Emma used 9 more blocks than Daniel for each car. How many blocks did Daniel have?

	Emma	Daniel
Number	8	4
Value	1 u + 9	1 u
Total value	8 u + 72	4 u

Number of wooden blocks that Daniel used for each car = 1 u
Number of wooden blocks that Emma used for each car = 1 u + 9

Number of wooden blocks that Daniel had
= 4 x 1 u
= 4 u

Number of wooden blocks that Emma had
= 8 x (1 u + 9)
= 8 u + 72

Emma had four times the number of wooden blocks as Daniel.

4 x 4 u = 8 u + 72
16 u = 8 u + 72
16 u - 8 u = 72
8 u = 72

1 u = 72 ÷ 8 = 9

Number of blocks that Daniel had
= 4 u
= 4 x 9
= 36

Answer(s): 36