PSLE
Kimberly had a bottle of orange juice. She drank 880 mℓ of orange juice in the afternoon and ²₇ of remaining orange juice in the evening. After that, there was ¹₃ a bottle of orange juice left. How much of the orange juice did she drink in the evening?
Fraction of the remaining orange juice left in the end
= 1 - ²₇
= ⁵₇

The remaining orange juice left in the end is equal to ¹₃ of the bottle of orange juice.
Make numerators the same.
LCM of 5 and 1 is 5.
 
⁵₇ of the remaining orange juice = ¹₃ of the total orange juice
⁵₇ of the remaining orange juice = ⁵₁₅ of the total orange juice

Volume of orange juice that she drank in the afternoon
= 15 u - 7 u
= 8 u

8 u = 880

1 u = 880 ÷ 8 = 110

Volume of orange juice that she drank in the evening
= 2 u
= 2 x 110
= 220 mℓ

Answer(s): 220 mℓ