The Unitary Method
Unit cost · Total cost · Price of one first
Tell the unit cost apart from the total cost.
Find the cost of many from the cost of one.
Find the cost of one from the cost of many.
Read the rate written on a shop bill.
1 pencil costs Rs. 10.
2 pencils cost Rs. 10 twice, that is Rs. 20.
3 pencils cost Rs. 10 three times, that is Rs. 30.
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