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Test # 86


1.
A dealer marks his goods 20% above C.P. He then allows some discount on it & makes a profit of 8%. The rate of discount is :

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Quantitative Aptitude
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Idiom of the Day

stuck up
to act as if other people are not as good as you are, to be conceited
We do not like the woman because she is stuck up and thinks that she is better than the rest of us.

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  • Simple Science

    Temperature

    Heat:
    When an object feels hot to the touch, we say that it has a high temperature; when it feels cold to the touch, that it has a low temperature; but we are not accurate judges of heat. Ice water seems comparatively warm after eating ice cream, and yet we know that ice water is by no means warm. A room may seem warm to a person who has been walking in the cold air, while it may feel decidedly cold to some one who has come from a warmer room. If the hand is cold, lukewarm water feels hot, but if the hand has been in very hot water and is then transferred to lukewarm water, the latter will seem cold. We see that the sensation or feeling of warmth is not an accurate guide to the temperature of a substance; and yet until 1592, one hundred years after the discovery of America, people relied solely upon their sensations for the measurement of temperature. Very hot substances cannot be touched without injury, and hence inconvenience as well as the necessity for accuracy led to the invention of the thermometer, an instrument whose operation depends upon the fact that most substances expand when heated and contract when cooled.


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