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Question

Hi, 

Jane made some orange juice. She gave 4/5 of it to Ken and had 6/7 litre of juice left. How many litres of orange juice did Jane make? Express your answer as a fraction in its simplest for.

Answer given

6/7 × 5 = 4 2/7

I do not understand why since it make of 4 2/7 then gave away 4/5 and cannot get back juice left of 6/7.

 

Answer

Let amount of orange juice be “a litres”

 

a-4/5a =6/7 litres

1/5a=6/7litres

a=6/7 x 5/1

a=4 2/7 litres Ans

 

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