Reggie had some pastries.
35 of them were cupcakes. The rest were macarons. He sold
34 of the cupcakes and 10 macarons. In the end, he had 89 pastries left. How many pastries did he sell?
| |
Cupcakes |
Macarons |
Comparing pastries
at first |
3x4 =
12 u |
2x4 =
8 u |
Before
|
4x3 =
12 u |
8 u |
Change
|
- 3x3 =
- 9 u |
- 10 |
After
|
1x3 =
3 u |
8 u - 10 |
The number of cupcakes at first is repeated. Make the number of cupcakes at first the same. LCM of 3 and 4 is 12.
Total number of pastries left
= 3 u + 8 u - 10
= 11 u - 10
11 u - 10 = 89
11 u = 89 + 10
11 u = 99
1 u = 99 ÷ 11 = 9
Number of pastries that Reggie sold
= 9 u + 10
= 9 x 9 + 10
= 81 + 10
= 91
Answer(s): 91
