Yen and Ivory shared a box of pens. Yen had 65% of the total pens. if Yen gave 90 of her pens to Ivory, both would have the same number of pens. How many pens did Ivory have?
| |
Yen |
Ivory |
Total |
| Before |
65% |
35% |
100% |
| Change |
- 15% |
+ 15% |
|
| After |
50% |
50% |
100% |
Total number of pens that Yen and Ivory shared = 100%
If Yen gave 90 pens to Ivory, 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 Yen gave to Ivory
= 65% - 50%
= 15%
15% → 90
1% → 90 ÷ 15 = 6
Number of pens that Ivory had
= 35%
= 35 x 6
= 210
Answer(s): 210
