A dozen notebook cost Rs.180
a) What is cost of such 8 notebook ?
b) How many notebook will cost Rs.225 ?
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Answer:
a. number of notebooks = 12
Cost of 12 notebooks = Rs.180
cost of 1 notebook = 180/12 = Rs.15
Cost of 8 notebooks = 15 × 8 = RS. 120
b. Cost of 1 notebook = RS. 15
Number of notebooks for Rs. 225 = 225/15 = 15books
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