A lump of two metals weighing 18 g is worth Rs. 87 but if their weight be interchanged, it would be worth Rs. 78.60. If the price of one metal be Rs. 6.70 per gram, find the weight of the other metal in the mixture.

A lump of two metals weighing 18 g is worth Rs. 87 but if their weight

1.	A lump of two metals weighing 18 g is worth Rs. 87 but if their weight be interchanged, it would be worth Rs. 78.60. If the price of one metal be Rs. 6.70 per gram, find the weight of the other metal in the mixture.
A.	8g
B.	12g
C.	15g
D.	18g
Answer» B. 12g

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A lump of two metals weighing 18 g is worth Rs. 87 but if their weight be interchanged, it would be worth Rs. 78.60. If the price of one metal be Rs. 6.70 per gram, find the weight of the other metal in the mixture.

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