Question

The ratio of tin and zinc in an alloy is 3:4, In 21 gm of alloy, find the quantity of (i) tin and (ii) zinc

PLEASE HELP!...​

Answer 1

Step-by-step explanation:

There are two methods to solve this problem:-

1) Algebric Method

let quantity of tin and zinc be 3x and 4x respectively

Total quantity of allow is 21g

3x+4x = 21

7x = 21

x = 21/7

x = 3

tin = 3×3 = 9g

zinc = 3×4 = 12g

2) Ratio method

Ratio of tin and zinc is 3:4

Total parts = 7

Total quantity of alloy = 21g

Tin = 3/7×21 = 9g

Zinc = 4/7×21 = 12g

You may choose the one which you understand more clearly.

Hope it helps

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