Sean and Elijah had 40 mochi balls each. Sean gave 40% of his mochi balls to Elijah. After receiving the mochi balls from Sean, Elijah gave 50% of his total mochi balls to Jane. How many mochi balls had Elijah left?
| |
Sean |
Elijah |
Jane |
| Before |
100% |
100% |
|
| Change 1 |
- 40% |
+ 40% |
|
| After 1 |
60% |
140% |
|
| Change 2 |
|
- 70% |
+ 70% |
| After 2 |
|
70% |
|
Percentage of mochi balls after Elijah received from Sean
= 100% + 40%
= 140%
Percentage of Elijah's mochi balls that Jane had after receiving from Elijah
= 50% x 140%
=
50100 x 140%
= 70%
Percentage of mochi balls that Elijah had left after giving to Jane
= 140% - 70%
= 70%
100% = 40
Number of mochi balls that Elijah had left
= 70% x 40
=
70100 x 40
= 28
Answer(s): 28
