At first, Barrel P and Barrel Q contained 0.2 ℓ and 4.2 ℓ of water respectively. Some water from Barrel Q was poured into Barrel P with no water spilling over. In the end, there was as much water in Barrel P as in Barrel Q. How much water was poured from Barrel Q to Barrel P?
|
Barrel P |
Barrel Q |
Difference |
Before |
0.2 ℓ |
4.2 ℓ |
4.4 ℓ |
Change |
+ 2 ℓ |
- 2 ℓ |
|
After |
2.2 ℓ |
2.2 ℓ |
|
Difference in the volume of water in Barrel P and Barrel Q
= 4.2 - 0.2
= 4 ℓ
Volume of water poured from Barrel Q to Barrel P
= 4 ÷ 2
= 2 ℓ
Answer(s): 2 ℓ