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The ratio of zinc and copper in an al...

The ratio of zinc and copper in an alloy is `7: 9.` It the weight of the copper in the alloy is 11.7 kg, find the weight of the zinc in the alloy.

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RD SHARMA ENGLISH-RATIO AND PROPORTION-All Questions
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  12. Which ratio is larger in the following pairs? 3:4\ or\ 9: 16 (ii) ...

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  13. Which ratio is larger in the following pairs? (i)4:7\ or\ 5:8 (ii) ...

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