Tank Z has thrice as much water as Tank Y. If Glen adds 0.3 ℓ of water to Tank Z and 1.8 ℓ of water to Tank Y, both tanks will have the same volume of water. Find the volume of water in Tank Z at first.
| |
Y |
Z |
| Before |
1 u |
3 u |
| Change |
+ 1.8 |
+ 0.3 |
| After |
1 u + 1.8 |
3 u + 0.3 |
Both tanks have the same volume of water in the end.
3 u + 0.3 = 1 u + 1.8
3 u - 1 u = 1.8 - 0.3
2 u = 1.5
1 u = 1.5 ÷ 2 = 0.75
Volume of water in Tank Z at first
= 3 u
= 3 x 0.75
= 2.25 ℓ
Answer(s): 2.25 ℓ
