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### Question

A profit of 40% is made by selling an article at Rs. 140. What is the cost of the article?

**A**

100.

**B**

110.

**C**

120.

**D**

95.

**Soln.**

**Ans: a**

Build it like this: if the sale is 140, the cost is Rs. 100. So, when the sale is 140 the cost should be ${100/140} × 140$ = Rs. 100.