Question
A shopkeeper marked his goods 32% above the cost price
and earned a profit of Rs. 14 after selling it by giving a discount of 20%. Find the cost price of the articleSolution
Let cost price of the article is Rs. ‘x’ Marked price of the article = 1.32 × x = Rs. 1.32x Selling price of the article = 0.8 × 1.32x = Rs. 1.056x So, 1.056x – x = 20 Or, 0.058x = 20 Or, x = 250 So, cost price of the article = Rs. 250
For the regression line of y on x, 2x+7y+32=0, find the value of byx.
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