Xandra and Barbara shared a box of pens. Xandra had 81% of the total pens. if Xandra gave 124 of her pens to Barbara, both would have the same number of pens. How many pens did Xandra have?
| |
Xandra |
Barbara |
Total |
| Before |
81% |
19% |
100% |
| Change |
- 31% |
+ 31% |
|
| After |
50% |
50% |
100% |
Total number of pens that Xandra and Barbara shared = 100%
If Xandra gave 124 pens to Barbara, both would have the same number of pens.
Number of pens that each would have in the end
= 100% ÷ 2
= 50%
Number of pens that Xandra gave to Barbara
= 81% - 50%
= 31%
31% → 124
1% → 124 ÷ 31 = 4
Number of pens that Xandra had
= 81%
= 81 x 4
= 324
Answer(s): 324
