Cody, Billy and Chan collected stickers in the ratio of 9 : 6 : 7. After Chan gave
45 to Cody and Billy, Chan had 216 less stickers than Cody. The number of stickers that Billy had increased by 40%. How many stickers did Cody and Chan have in the end?
| |
Cody |
Billy |
Chan |
| Before |
9 u |
6 u |
7 u |
| Change |
+ 3.2 u |
+ 2.4 u |
- 5.6 u |
| After |
12.2 u |
8.4 u |
1.4 u |
Number of stickers that Chan gave to Cody and Billy
=
45 x 7 u
= 5.6 u
Number of stickers that Billy received from Chan
=
40100 x 6 u
= 2.4 u
Number of stickers that Cody received from Chan
= 5.6 u - 2.4 u
= 3.2 u
Number of less stickers that Chan had less than Cody
= 12.2 u - 1.4 u
= 10.8 u
10.8 u = 216
1 u = 216 ÷ 10.8 = 20
Number of stickers that Cody and Chan had
= 12.2 u + 1.4 u
= 13.6 u
= 13.6 x 20
= 272
Answer(s): 272
