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  1. The ratio of copper and zinc in brass is 13 : 7. How much zinc will be there in 100 kg of brass ?
    1. 20 kg.
    2. 55 kg.
    3. 35 kg.
    4. 40 kg.
Correct Option: C

∵  In 20 gm of brass, quantity of zinc = 7gm
∴  In 100 gm of brass, quantity
of zinc = 7 × 5 = 35 gm.


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