Jen made 315 croissants and cupcakes. After she gave 0.7 of the croissants and 0.6 of the cupcakes to her friends, she was left with an equal number of croissants and cupcakes. How many croissants had she left?
| |
Croissants |
Cupcakes |
Before
|
10x2 =
20 u |
5x3 =
15 u |
Change
|
- 7x2 =
- 14 u |
- 3x3 =
- 9 u |
After
|
3x2 =
6 u |
2x3 =
6 u |
Comparing croissants and
cupcakes in the end |
1x6 =
6 u |
1x6 =
6 u |
0.7 =
710 0.6 =
610 =
35 The number of croissants and cupcakes is the same in the end. Make the number of croissants and cupcakes in the end the same. LCM of 3 and 2 and 1 is 6.
Total number of croissants and cupcakes at first
= 20 u + 15 u
= 35 u
35 u = 315
1 u = 315 ÷ 35 = 9
Number of croissants that Jen had left
= 6 u
= 6 x 9
= 54
Answer(s): 54
