Box K and Box L have a total of 70 chocolate bars. After 12 chocolate bars were transferred from Box K to Box L, there were 4 times as many chocolate bars in Box K as Box L. How many chocolate bars were there in each box in the end?
- Box K
- Box L
|
Box K |
Box L |
Total |
Before |
4 u + 12 |
1 u - 12 |
70 |
Change |
- 12 |
+ 12 |
|
After |
4 u |
1 u |
70 |
(a)
The total number of chocolate bars at first and in the end remains the same.
Total number of chocolate bars in the end
= 4 u + 1 u
= 5 u
5 u = 70
1 u = 70 ÷ 5 = 14
Number of chocolate bars in Box K in the end
= 4 u
= 4 x 14
= 56
(b)
Number of chocolate bars in Box L in the end
= 1 u
= 14
Answer(s): (a) 56; (b) 14