The ratio of number of cans of orange, pineapple and mixed fruit juices kept in a store is 8 : 9 : 15. If the store sells 25%, 33.33% and 20% of orange, pineapple and mixed fruit juices cans respectively, then what is the ratio of number of cans of these juices in the remaining stock?
1 : 1 : 2
Step 1 — Set initial stock: Let the cans be \(8x,\ 9x,\ 15x\).
Step 2 — Cans sold:
Orange: \(25\%\) of \(8x = 2x\). Pineapple: \(\tfrac{1}{3}\) of \(9x = 3x\). Mixed: \(20\%\) of \(15x = 3x\).
Step 3 — Remaining cans:
\(8x-2x:9x-3x:15x-3x = 6x:6x:12x = 1:1:2\).
Therefore the remaining ratio is 1 : 1 : 2.
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