Question

A bangle is made of gold bronze in ratio 4:7 WT of silver 557 mg . Find the WT of gold in bangla

Answer 1

4 gold

7 silver

557 mg of silver

Set-up a proportion

$\frac{4}{7} = \frac{x}{557}$

Cross-multiply

557 * 4 = 318.2857

7x = 318.2857

Divide both sides by 7

7x/7 = x

318.2857/7 = 45.4693

Round to the nearest ones

45.4 --> 45

Answer: There is approximately 45 mg of gold

Answer 2

4/7=x/557
7x=4*557
x=4*557/7
x=4*79.56=318 (approx)

Thus, weight of gold I'd approximately 318mg

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