Number Puzzle #94
There are 200 employees in a company. An external vendor is chosen to serve coffee twice a day. 100 coffee cups were offered by the company to the vendor but as an incentive to have the cups in tact, at the end of the day the company offered 30 paise for every cup remained safely and charged 90 paise for every broken cup. At the end of a day, the vendor received Rs. 6. How many cups did the vendor break?
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thus he will receive (100-x)*30 – 90x = 600
3000 -120x = 600
120x = 2400
x = 20