Sabrina, Gillian and Emma had chocolate bars in the ratio of 7 : 4 : 1. After Sabrina gave 12 chocolate bars to Gillian and Emma, the three of them had the same number of chocolate bars. Find the total number of chocolate bars the children had.
| |
Sabrina |
Gillian |
Emma |
Total |
| Before |
7 u |
4 u |
1 u |
12 u |
| Change |
- 12 |
+ 12 |
|
| After |
4 u |
4 u |
4 u |
12 u |
Total number of chocolate bars
= 7 u + 4 u + 1 u
= 12 u
Number of chocolate bars that each had in the end
= 12 u ÷ 3
= 4 u
Number of chocolate bars that Sabrina gave to Gillian and Emma
= 7 u - 4 u
= 3 u
3 u = 12
1 u = 12 ÷ 3 = 4
Total number of chocolate bars
= 12 u
= 12 x 4
= 48
Answer(s): 48
