Question

Cost of 90 pens is Rs13.50.how many pens can be bought for Rs10.50.

Answer 1

Answer:

60 pens

Step-by-step explanation:

We can buy 60 pen for Rs10.50.

Answer 2

$₹ 13.50 \: is \: the \: cost \: of \: 90 pens \\ </p><p>₹ 1 \: is \: the \: cost \: of \: \frac{90}{13.50} \: pens \\ </p><p>₹ 10.50 \: is \: the \: cost \: of \: \frac{90 \times 10.50}{13.50} pens. \\ = 70 \: pens(ans)$

Step-by-step explanation:

Done by Aritra kar.

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