Eva had 1870 mℓ more milk than Raeann. After Eva gave Raeann 440 mℓ of milk, the ratio of Eva's milk to Raeann's milk became 5 : 2. How much milk did Eva have at first? Give your answer in millilitres.
|
Eva |
Raeann |
Difference |
Before |
1 u + 1870 |
1 u |
1870 |
Change |
- 440 |
+ 440 |
|
After |
1 u + 1430 |
1 u + 440 |
990 |
Comparing Eva and Raeann in the end |
5 p |
2 p |
3 p |
Volume of milk that Eva had in the end
= 1 u + 1870 - 440
= 1 u + 1430
Difference in the volume of milk between Eva and Raeann in the end
= 5 p - 2 p
= 3 p
3 p = 1430 - 440
3 p = 990
1 p = 990 ÷ 3 = 330
Volume of milk that Eva had at first
= 5 p + 440
= 5 x 330 + 440
= 1650 + 440
= 2090 mℓ
Answer(s): 2090 mℓ