Cindy and Jen shared some nosepins. Cindy's share was 35% of Jen's share. She then increased her share of the nosepins by taking 15% of Jen's share. Given that Cindy had 21 fewer nosepins than Jen in the end, how many nosepins did the girls have altogether?
| |
Cindy |
Jen |
Difference |
Total |
| Before |
7 u |
20 u |
|
27 u |
| Change |
+ 3 u |
- 3 u |
|
|
| After |
10 u |
17 u |
7 u |
27 u |
35% =
35100 =
720Number of nosepins that Cindy took from Jen
= 15% x 20 u
=
15100 x 20 u
= 3 u
Number of fewer nosepins that Cindy had than Jen in the end = 7 u
7 u = 21
1 u = 21 ÷ 7 = 3
Total number of nosepins that the girls had
= 27 u
= 27 x 3
= 81
Answer(s): 81
