Question

If the cost of 10 pen is Rs.90 , then the cost of 19 pen is:​

Answer 1

Step-by-step explanation:

Cost of 10 pens = Rupees 90

Cost of 1 pen = 90/10

= 9

Therefore, cost of 19 pens = 19 × 9

=Rupees 171

Answer 2

Step-by-step explanation:

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Done by Aritra kar.