John and Ahmad had 80 chocolate bars each. John gave 40% of his chocolate bars to Ahmad. After receiving the chocolate bars from John, Ahmad gave 50% of his total chocolate bars to Jade. How many chocolate bars had Ahmad left?
| |
John |
Ahmad |
Jade |
| Before |
100% |
100% |
|
| Change 1 |
- 40% |
+ 40% |
|
| After 1 |
60% |
140% |
|
| Change 2 |
|
- 70% |
+ 70% |
| After 2 |
|
70% |
|
Percentage of chocolate bars after Ahmad received from John
= 100% + 40%
= 140%
Percentage of Ahmad's chocolate bars that Jade had after receiving from Ahmad
= 50% x 140%
=
50100 x 140%
= 70%
Percentage of chocolate bars that Ahmad had left after giving to Jade
= 140% - 70%
= 70%
100% = 80
Number of chocolate bars that Ahmad had left
= 70% x 80
=
70100 x 80
= 56
Answer(s): 56
