Ethan and Tim had 90 mini cupcakes each. Ethan gave 25% of his mini cupcakes to Tim. After receiving the mini cupcakes from Ethan, Tim gave 60% of his total mini cupcakes to Sarah. How many mini cupcakes had Tim left?
| |
Ethan |
Tim |
Sarah |
| Before |
100% |
100% |
|
| Change 1 |
- 25% |
+ 25% |
|
| After 1 |
75% |
125% |
|
| Change 2 |
|
- 75% |
+ 75% |
| After 2 |
|
50% |
|
Percentage of mini cupcakes after Tim received from Ethan
= 100% + 25%
= 125%
Percentage of Tim's mini cupcakes that Sarah had after receiving from Tim
= 60% x 125%
=
60100 x 125%
= 75%
Percentage of mini cupcakes that Tim had left after giving to Sarah
= 125% - 75%
= 50%
100% = 90
Number of mini cupcakes that Tim had left
= 50% x 90
=
50100 x 90
= 45
Answer(s): 45
