Question

ng BS 40. Pin we length of the other parallel sides.
e.) If the cost of 20 pens is Rs. 180, calculate the cost of 15 pens?​

Answer 1

QUESTION:- If the cost of 20 pens is Rs. 180, calculate the cost of 15 pens?

ANSWER:-

$cost \: \: of \: 20 \: pens \: is \: 180 \\ \\ \frac{180}{20} = 9 \\ \\ so \: \: rate \: for \: \: each \: \: pen \: \: is \: 9rs$

$for \: 15 \: \: pens \: \\ \\ 15 \times 9 = 135rs$

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MARK BRAINLIEST PLS