Mark and Eric had 80 chocolate bars each. Mark gave 25% of his chocolate bars to Eric. After receiving the chocolate bars from Mark, Eric gave 60% of his total chocolate bars to Yoko. How many chocolate bars had Eric left?
| |
Mark |
Eric |
Yoko |
| Before |
100% |
100% |
|
| Change 1 |
- 25% |
+ 25% |
|
| After 1 |
75% |
125% |
|
| Change 2 |
|
- 75% |
+ 75% |
| After 2 |
|
50% |
|
Percentage of chocolate bars after Eric received from Mark
= 100% + 25%
= 125%
Percentage of Eric's chocolate bars that Yoko had after receiving from Eric
= 60% x 125%
=
60100 x 125%
= 75%
Percentage of chocolate bars that Eric had left after giving to Yoko
= 125% - 75%
= 50%
100% = 80
Number of chocolate bars that Eric had left
= 50% x 80
=
50100 x 80
= 40
Answer(s): 40
