# Day-10 | Aptitude Questions and Answers with Explanation

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By Selling a 2 GB Pen drive for Rs.300, an electronic shop keeper gains 20%. During a clearance sale, he allows a discount of 10% of the marked price, his gain percent during the sale season is:

a)       7   b)  7.5   c)  8   d) 9

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c) 8

If the pen is sold at Rs.300 the shop keeper makes a gain of 20%

So the cost price is 100/120 * 300 = Rs.250

But he allows a discount of 10%

That means he is selling at (10/100) * 300 = 30 discount 300 – 30 = Rs.270

Cost Price = Rs.250, Selling Price = Rs.270

Profit = Rs.2

20 * 100/250 = 8%

The Owner of a television dealer shop charges his customer 25% more than the cost price. If a customer   paid Rs.32,500 for a television set, then what was the cost price of the television set ?

a)      RS. 29,200 b) RS. 26,000   c) RS. 28,600     d) RS. 29,800

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b)  RS. 26,000

Dealer Charges 25% more than cost price

125% of cost price = RS. 32,500

Cost Price = 100/125* 32,500 = RS.26000

what could be a possible arrangement of 10 points in space so that five lines could be drawn with a condition that every line has four points on it.

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This is a question which you would have come  across in several puzzle books and previous questions. Answer is a “star”. You could try drawing a star and count the number of intersections which should be 10

Ram has 30 Rupees with him . He has two rupee notes. One of the rupee notes is not a twenty rupee note. Then find out the notes he has with him?

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These kinds of questions are the simplest of the simpler ones. But one could tend to miss out due to nervousness. Here is the answer: One of the rupee notes is not a twenty rupee note. So the other note can be a twenty rupee note.

In a dark room with no equipment’s other than a clock, you are given a pendulum. How can you measure your height now?

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