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The ratios of copper to Zinc in alloys A...

The ratios of copper to Zinc in alloys A and B are 3:4 and 5:9 respectively. A and B are taken in the ratio 2:3 and melted to form a new alloy C. What is the ratio of copper to Zinc in C?
मिश्रधातु A और B में तांबा और जस्ता का अनुपात क्रमशः 3 : 4 और 5:9 है | A और B को 2 : 3 के अनुपात में लिया जाता है तथा पिघलाकर एक नयी मिश्रधातु C बनाई जाती है | C में तांबा और जस्ता का क्या अनुपात होगा ?

A

a) ` 8:13 `

B

b) `3:5 `

C

c) `9:11 `

D

d) `27:43`

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  • Alloys A and B contain copper and zink in the ratio 1 :3 and 3 :5 , respectively . In What ratio A and B be mixed to get a new alloy containing copper and zink in the ratio 1 :2 ?

    A
    `3 :4`
    B
    `2 :1`
    C
    `1 :2`
    D
    `4 :5`

  • A and B are two alloys of gold and copper prepared by mixing metals in ratios 7:2 and 7:11 respectively. If equal quantities of the alloys are melted to form a third alloy C, the ratio of gold and copper in C will be:

    A
    `7:5`
    B
    `5:9`
    C
    `9:5`
    D
    `5:7`

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