Question

a drink is made by mixing pineapple juice orange juice and lime juice in the ratio 2:7:3 Sally makes 600ml of the fruit drink how much pineapple was used?

Answer 1

Pineapple juice : orange juice : lime juice = 2:7:3
So there is 2x of pineapple juice, 7x of orange juice and 3x of lime juice.

$2x+7x+3x=600 \\ 12x=600 \\ x=50 \\ \\ pineapple \ juice \to 2x = 2 \times 50=100$

She used 100 ml of pineapple juice.

Answer 2

So the answer is
pineapple juice : orange juice : lime juice =600
2 : 7 : 3 =600
the question is how much pineapple was used..

2/12 x 600 = 100.
That's the answer