The ratio between the weights of gold and silver in an alloy is 17 : 3. If the weight of silver in the alloy is 2.7 gm, find the weight of gold in the alloy.

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RRB Non Technical Exam (Secunderabad) 2016 click here to view all questions

The ratio between the weights of gold and silver in an alloy is 17 : 3. If the weight of silver in the alloy is 2.7 gm, find the weight of gold in the alloy.

A12.6 gm

B15.3 gm

C18 gm

D21.2 gm

rahul ? Jan 14 '2020 at 10:51

Correct answer is: 15.3 gm

Explanation:

Let the weights of gold and silver in an alloy be 17x and 3x respectively

Weight of silver in the alloy = 2.7 gm

⇒ 3x = 2.7

⇒ x = 0.9 gm

Weight of gold in the alloy = 17× 0.9 = 15.3 gm

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Correct answer is: 15.3 gm Explanation: Let the weights of gold and silver in an alloy be 17x and 3x respectively Weight of silver in the alloy = 2.7 gm ⇒ 3x = 2.7 ⇒ x = 0.9 gm Weight of gold in the alloy = 17× 0.9 = 15.3 gm rahul ? answered Jan 14 '2020 at 10:51 All Comments

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