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When equal volumes of two metals are mix...

When equal volumes of two metals are mixed together the specific gravity of alloy is 4. When equal masses of the same two metals are mixed together the specific gravity of the alloy becomes 3. find specific gravity of each metal?
(specific gravity `=("density of substance")/("density of water"))`

A

2,6

B

3,5

C

4,2

D

3,4

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