Question

cost of 18notebooks is423.find the cost of 20 notebooks​

Answer 1

Answer:

Cost of 18 books = Rs 423

Cost of 1 book= 423/18

Cost of 20 books = 423/18×20= 470Rs..

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Answer 2

Answer:

cost of 18 notebook=423

cost of 1 notebook=423/18

so, cost of 20 notebook=423/18×20

=4230/9

=rs470right answer

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