PSLE
Gabby had a bottle of orange juice. She drank 980 mℓ of orange juice in the morning and ²₅ of remaining orange juice in the evening. After that, there was ¹₄ 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 - ²₅
= ³₅

The remaining orange juice left in the end is equal to ¹₄ of the bottle of orange juice.
Make numerators the same.
LCM of 3 and 1 is 3.
 
³₅ of the remaining orange juice = ¹₄ of the total orange juice
³₅ of the remaining orange juice = ³₁₂ of the total orange juice

Volume of orange juice that she drank in the morning
= 12 u - 5 u
= 7 u

7 u = 980

1 u = 980 ÷ 7 = 140

Volume of orange juice that she drank in the evening
= 2 u
= 2 x 140
= 280 mℓ

Answer(s): 280 mℓ