Mark drank
12 of the milk in his milk bottle. He accidentally spilled
15 of the remaining milk. As a result, he had 160 mℓ of milk left in his milk bottle. How much milk did Mark have at first? Give your answer in mℓ.
| Drank |
Remaining milk |
Total |
| 1x5 |
1x5 |
2x5 |
| |
Spilled |
Left |
|
| |
1x1 |
4x1 |
|
| 5 u |
1 u |
4 u |
10 u |
Fraction of remaining milk left after Mark spilled some
= 1 -
12=
12The volume of the remaining milk is the combined repeated identity. Make the volume of remaining milk the same. LCM of 1 and 5 is 5.
Volume of water left = 4 u
4 u = 160
1 u = 160 ÷ 4 = 40
Total volume of water that Mark had at first
= 10 u
= 10 x 40
= 400 mℓ
Answer(s): 400 mℓ
