PSLE
Victoria had a bottle of juice. She drank 910 mℓ of juice in the afternoon and ²₇ of remaining juice in the evening. After that, there was ¹₄ a bottle of juice left. How much of the juice did she drink in the evening?
Fraction of the remaining juice left in the end
= 1 - ²₇
= ⁵₇

The remaining juice left in the end is equal to ¹₄ of the bottle of juice.
Make numerators the same.
LCM of 5 and 1 is 5.
 
⁵₇ of the remaining juice = ¹₄ of the total juice
⁵₇ of the remaining juice = ⁵₂₀ of the total juice

Volume of juice that she drank in the afternoon
= 20 u - 7 u
= 13 u

13 u = 910

1 u = 910 ÷ 13 = 70

Volume of juice that she drank in the evening
= 2 u
= 2 x 70
= 140 mℓ

Answer(s): 140 mℓ