A bottle contained 3.1 ℓ more water than a can. After some water was poured from the bottle to the can, both the bottle and the can had 4 ℓ of water each. How much water was there in the can at first?
|
Bottle |
Can |
Total |
Before |
1 u + 3.1 |
1 u |
8 |
Change |
- ? |
+ ? |
|
After |
4 |
4 |
8 |
Volume of water in the can = 1 u
Volume of water in the bottle = 1 u + 3.1
Total volume of water
= 1 u + 1 u + 3.1
= 2 u + 3.1
Total volume of water
= 2 x 4
= 8 ℓ
When water is poured from the bottle to the can, the total volume remains unchanged.
2 u + 3.1 = 8
2 u = 8 - 3.1
2 u = 4.9
1 u = 4.9 ÷ 2 = 2.45
Volume of water in the can at first = 2.45 ℓ
Answer(s): 2.45 ℓ