100 glasses are there. A servant has to supply glasses to a person If he supplies the glasses without any damage he will get 3 paise otherwise he will loose 3 paise. At the end of supplying 100 glasses if he gets 270 paise, how many glasses were supplied safely.

2 Answers on this Question

1. Suppose that x glassses are supplied safely , therefore
   (100-x) glases are damage. Then equation is :
   3x – 3(100-x) = 270
   on solving this equation value of x comes out to be 95.

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2. Wrong again: Answer is 95.
   If there are x damaged glasses and y undamaged glasses then
   x + y = 100
   since each glass delivered undamaged is worth 3 points and
   each damaged glass deducts 3 points:
   and we know that the net result is 90 glasses worth of
   points then:
   x – y = 90 —–> x = 90 + y
   (90 + y) + y = 100
   2*y = 10 —> y = 5
   so if number of damaged glasses was 5 then undamaged must
   be 100 – 5 = 95

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