Abi made 92 macarons and cupcakes. After she gave 0.1 of the macarons and 0.75 of the cupcakes to her pupils, she was left with an equal number of macarons and cupcakes. How many cupcakes had she left?
| |
Macarons |
Cupcakes |
Before
|
10x1 =
10 u |
4x9 =
36 u |
Change
|
- 1x1 =
- 1 u |
- 3x9 =
- 27 u |
After
|
9x1 =
9 u |
1x9 =
9 u |
Comparing macarons and
cupcakes in the end |
1x9 =
9 u |
1x9 =
9 u |
0.1 =
110 0.75 =
75100 =
34 The number of macarons and cupcakes is the same in the end. Make the number of macarons and cupcakes in the end the same. LCM of 9 and 1 and 1 is 9.
Total number of macarons and cupcakes at first
= 10 u + 36 u
= 46 u
46 u = 92
1 u = 92 ÷ 46 = 2
Number of cupcakes that Abi had left
= 9 u
= 9 x 2
= 18
Answer(s): 18
