Kylie had four times the number of toy bricks as Jenson. Kylie used all her bricks to build 7 identical planes. Jenson used all his bricks to build 4 identical planes. Kylie used 9 more bricks than Jenson for each plane. How many bricks did Jenson have?
| |
Kylie |
Jenson |
| Number |
7 |
4 |
| Value |
1 u + 9 |
1 u |
| Total value |
7 u + 63 |
4 u |
Number of toy bricks that Jenson used for each plane = 1 u
Number of toy bricks that Kylie used for each plane = 1 u + 9
Number of toy bricks that Jenson had
= 4 x 1 u
= 4 u
Number of toy bricks that Kylie had
= 7 x (1 u + 9)
= 7 u + 63
Kylie had four times the number of toy bricks as Jenson.
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 bricks that Jenson had
= 4 u
= 4 x 7
= 28
Answer(s): 28
