Question

A dozen notebooks cost 186. (1) What is the cost of 8 such notebooks? (0) How many
notebooks will cost 356.50?
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Answer 1

Step-by-step explanation:

I dozen is equal to 12units so we find the cost of 1 note book cost and then find 8 note books cost

Answer 2

Answer:

(i) Cost of 8 notebooks = Rs. 124

(ii) 23 notebooks cost Rs. 356.50

Step-by-step explanation:

(i) Dozen notebooks = 12 notebooks = Rs. 186

Thus, cost of 1 notebook = 186/12 => Rs. 15.5

∴ Cost of 8 notebooks = 15.5*8 => Rs. 124

(ii) Let the cost of x notebooks be Rs. 356.5.

Rs. 15.5 = 1 notebook

∴ No. of notebooks which cost Rs. 356.5 :

=> 356.5/15.5 => 23 notebooks cost Rs. 356.50.