Oliver and Zane had 70 chocolate bars each. Oliver gave 25% of his chocolate bars to Zane. After receiving the chocolate bars from Oliver, Zane gave 60% of his total chocolate bars to Diana. How many chocolate bars had Zane left?
| |
Oliver |
Zane |
Diana |
| Before |
100% |
100% |
|
| Change 1 |
- 25% |
+ 25% |
|
| After 1 |
75% |
125% |
|
| Change 2 |
|
- 75% |
+ 75% |
| After 2 |
|
50% |
|
Percentage of chocolate bars after Zane received from Oliver
= 100% + 25%
= 125%
Percentage of Zane's chocolate bars that Diana had after receiving from Zane
= 60% x 125%
=
60100 x 125%
= 75%
Percentage of chocolate bars that Zane had left after giving to Diana
= 125% - 75%
= 50%
100% = 70
Number of chocolate bars that Zane had left
= 50% x 70
=
50100 x 70
= 35
Answer(s): 35
