PSLE
Kylie had a bottle of juice. She drank 800 mℓ of juice in the afternoon and ³₅ of remaining juice in the evening. After that, there was ¹₅ 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 - ³₅
= ²₅

The remaining juice left in the end is equal to ¹₅ of the bottle of juice.
Make numerators the same.
LCM of 2 and 1 is 2.
 
²₅ of the remaining juice = ¹₅ of the total juice
²₅ of the remaining juice = ²₁₀ of the total juice

Volume of juice that she drank in the afternoon
= 10 u - 5 u
= 5 u

5 u = 800

1 u = 800 ÷ 5 = 160

Volume of juice that she drank in the evening
= 3 u
= 3 x 160
= 480 mℓ

Answer(s): 480 mℓ