Jack and Lee had 70 chocolate bars each. Jack gave 40% of his chocolate bars to Lee. After receiving the chocolate bars from Jack, Lee gave 50% of his total chocolate bars to Tina. How many chocolate bars had Lee left?
| |
Jack |
Lee |
Tina |
| Before |
100% |
100% |
|
| Change 1 |
- 40% |
+ 40% |
|
| After 1 |
60% |
140% |
|
| Change 2 |
|
- 70% |
+ 70% |
| After 2 |
|
70% |
|
Percentage of chocolate bars after Lee received from Jack
= 100% + 40%
= 140%
Percentage of Lee's chocolate bars that Tina had after receiving from Lee
= 50% x 140%
=
50100 x 140%
= 70%
Percentage of chocolate bars that Lee had left after giving to Tina
= 140% - 70%
= 70%
100% = 70
Number of chocolate bars that Lee had left
= 70% x 70
=
70100 x 70
= 49
Answer(s): 49
