Question
Mohan sold two items at Rs. 9,100 each. On the first
item, he made a profit of 30%, while on the second, he incurred a loss of 30%. Calculate the difference in the cost prices of the two items.Solution
Cost price of the article sold at 30% profit = 9100 ÷ 1.3 = Rs. 7,000 And cost price of the article sold at 30% loss = 9100 ÷ 0.7 = Rs. 13,000 So, required difference = 13000 - 7000 = Rs. 6,000 Hence, option b.
Two random variables x and y have the following regression equations -
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6x + y – 31 = 0
then, the mean values o...
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