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8. P and Q are two alloys of aluminum and brass pre-pared by mixing metals in proportions 7:2 and 7:11,respectively. If equal quantities of the two alloys aremelted to form a third alloy R, the proportion ofaluminum and brass in R will be:(a) 5:9(b) 5:7(c) 7:5(d) 9:5​

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Answer:

7:5

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