Question

In an alloy of brass the ratio of copper to zinc is 9:7. In 64 kg of such a quality of brass if 4 kg of copper and 2 kg of zinc be added then find the new ratio of copper to zinc.​

Answer 1

Answer:

The rate of current drawn from the bulb having the power 440W which is connected to

220V circuit is.

A. 2A B.3A C.4A D..5A

The rate of current drawn from the bulb having the power 440W which is connected to

220V circuit is.

A. 2A B.3A C.4A D..5A

The rate of current drawn from the bulb having the power 440W which is connected to

220V circuit is.

A. 2A B.3A C.4A D..5A

Answer 2

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question :-

In an alloy of brass the ratio of copper to zinc is 9:7. In 64 kg of such a quality of brass if 4 kg of copper and 2 kg of zinc be added then find the new ratio of copper to zinc.

Answer :

Given,

Weight of zinc in the alloy =9.8kg

The ratio of copper and zinc in an alloy =9:7.

Let,

Weight of copper =9x

Weight of zinc =7x

9.8=7x

x=1.4kg

∴ Weight of copper in the alloy =9x

=9(1.4)

=12.6kg

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