Question
If the cost price of 12 pens is equal to the selling
price of 8 pens, the gain percent is ?Solution
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Average of 15 observations calculated by a student was 65 but when he again went through his observations he realised that he took value of three observ...
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The average expenditure of a man for the first five month is Rs.14000 and for the next seven months is Rs.12000. If he saves 17000 in that year then fin...
