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