Tammy and Shiyun shared a box of marbles. Tammy had 63% of the total marbles. if Tammy gave 117 of her marbles to Shiyun, both would have the same number of marbles. How many marbles did Tammy have?
| |
Tammy |
Shiyun |
Total |
| Before |
63% |
37% |
100% |
| Change |
- 13% |
+ 13% |
|
| After |
50% |
50% |
100% |
Total number of marbles that Tammy and Shiyun shared = 100%
If Tammy gave 117 marbles to Shiyun, both would have the same number of marbles.
Number of marbles that each would have in the end
= 100% ÷ 2
= 50%
Number of marbles that Tammy gave to Shiyun
= 63% - 50%
= 13%
13% → 117
1% → 117 ÷ 13 = 9
Number of marbles that Tammy had
= 63%
= 63 x 9
= 567
Answer(s): 567
