Eva had 2480 mℓ more juice than Yen. After Eva gave Yen 480 mℓ of juice, the ratio of Eva's juice to Yen's juice became 7 : 3. How much juice did Eva have at first? Give your answer in millilitres.
|
Eva |
Yen |
Difference |
Before |
1 u + 2480 |
1 u |
2480 |
Change |
- 480 |
+ 480 |
|
After |
1 u + 2000 |
1 u + 480 |
1520 |
Comparing Eva and Yen in the end |
7 p |
3 p |
4 p |
Volume of juice that Eva had in the end
= 1 u + 2480 - 480
= 1 u + 2000
Difference in the volume of juice between Eva and Yen in the end
= 7 p - 3 p
= 4 p
4 p = 2000 - 480
4 p = 1520
1 p = 1520 ÷ 4 = 380
Volume of juice that Eva had at first
= 7 p + 480
= 7 x 380 + 480
= 2660 + 480
= 3140 mℓ
Answer(s): 3140 mℓ