Jen and Mary shared a box of coins. Jen had 66% of the total coins. if Jen gave 128 of her coins to Mary, both would have the same number of coins. How many coins did Mary have?
| |
Jen |
Mary |
Total |
| Before |
66% |
34% |
100% |
| Change |
- 16% |
+ 16% |
|
| After |
50% |
50% |
100% |
Total number of coins that Jen and Mary shared = 100%
If Jen gave 128 coins to Mary, both would have the same number of coins.
Number of coins that each would have in the end
= 100% ÷ 2
= 50%
Number of coins that Jen gave to Mary
= 66% - 50%
= 16%
16% → 128
1% → 128 ÷ 16 = 8
Number of coins that Mary had
= 34%
= 34 x 8
= 272
Answer(s): 272
