Question

3 calculators cost £36.30. How much do 10 calculators cost?

Answer 1

Answer:

121

Step-by-step explanation:

Use the unitary method i.e. finding the cost of one item then finding the cost of the required number of items.

Cost of 3 calculators = 36.30

∴ Cost of 1 calculator = 36.30/3 = 12.10

Now, cost of 10 calculators = 12.10*10

                                              = 121

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