Metal $^{'} A^{'}$ is $20$ times heavier than iron and metal $^{'} B^{'}$ is $13$ times heavier than iron. In what proportion must these two metals be mixed to obtain an alloy which is $17$ times heavier than iron.

3 : 4

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3 : 1

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1 : 3

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4 : 3

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Solution

The correct option is D $4 : 3$

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Metal ′A′ is 20 times heavier than iron and metal ′B′ is 13 times heavier than iron. In what proportion must these two metals be mixed to obtain an alloy which is 17 times heavier than iron.

The correct option is D 4:3

Metal $^{'} A^{'}$ is $20$ times heavier than iron and metal $^{'} B^{'}$ is $13$ times heavier than iron. In what proportion must these two metals be mixed to obtain an alloy which is $17$ times heavier than iron.

The correct option is D $4 : 3$