Gunjan Asked a Question
February 28, 2021 5:17 pmpts 30 pts
Ex.7 The price of a book is reduced by 10% and the sale of the book is increased by 15%. Find the net effect on revenue. (A) 2.5% (B) 1.5% (C) 3.5% (D) 4.5% (C) Let old price is 100 Rs. and old selling number of books are 100 Ans. So, old revenue = price X selling number of bookS = 100 x 100 = 10000 New price = 90 Rs and New selling number = 115 New revenue = 90 x 115 = 10350 New Revenue-Old Revenue x 100 Net Effect% = Old Revenue 10350-10000100 10000 5 3.5% 100 Short trick: change in price is () and change in sale is (+) 10x15 5-1.5 =3.5% So net effect% = - 10 +15-- 100 nout@ndunalo com Call IIs 7665435300 30
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  • Rucha rajesh shingvekar thankyou
    see this
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