Question

o carte costa 5,2lei .Cat costa daca:as-ar scumpi cu 15℅ ,b s-ar ieftini cu 20℅

Answer 1

5,2 lei x 115/100 x 80/100 =
= $\frac{5,2\cdot115\cdot80}{100\cdot100}=\\ =\frac{47840}{10000}=4,7840=4,784 lei\,\approx\,4,80\,lei$