Pamela, Cathy and Risa had chocolate bars in the ratio of 10 : 5 : 3. After Pamela gave 8 chocolate bars to Cathy and Risa, the three of them had the same number of chocolate bars. Find the total number of chocolate bars the children had.
| |
Pamela |
Cathy |
Risa |
Total |
| Before |
10 u |
5 u |
3 u |
18 u |
| Change |
- 8 |
+ 8 |
|
| After |
6 u |
6 u |
6 u |
18 u |
Total number of chocolate bars
= 10 u + 5 u + 3 u
= 18 u
Number of chocolate bars that each had in the end
= 18 u ÷ 3
= 6 u
Number of chocolate bars that Pamela gave to Cathy and Risa
= 10 u - 6 u
= 4 u
4 u = 8
1 u = 8 ÷ 4 = 2
Total number of chocolate bars
= 18 u
= 18 x 2
= 36
Answer(s): 36
