Question

3 kg of cheese costs £7.50
What is the cost of 6.5 kg of cheese?

Answer 1

Answer: £16.25

Explanation:

In order to find the answer we will use a method called unitary method, it is very simple and you must know it as it's repeatedly given in Year 7 and 8 here's the explanation

Cost of 3kg= £7.50

Cost of 1 kg = £7.50÷3

=2.5

Cost of 6.5kg = 2.5×6.5 = £16.25