Question

if the cost of 5 pens is 72/- . find the cost of 10 such pens.

Answer 1

Answer:

Step-by-step explanation:

Cost of 5 pens = Rs.72

So,

Cost of 10 pens = 2×cost of 5 pens

= 2×72

= Rs.144

Answer 2

$\huge {\mathfrak {Answer:-}}$

$\sf Cost\: of \:5\:pens=72 \\ \\ \sf Cost \:of\:1\:pen= \dfrac{72}{5} \\ \\ \sf \therefore Cost\:of\:10\:pens=\dfrac {72}{\cancel{5}}×{\cancel {10}} \\ \\ \sf =144$

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