Question

The cost of 40 litres of petrol is £42.40. Work out how much it would cost for 70 litres of petrol. Please help me I will give brainliest and 5 stars!!

Answer 1

Answer:£$74.2$

Step-by-step explanation:

Given

Cost of $40$ liters of petrol is £$42.40$

Using Unitary method

$40$ liters cost ↔£$42.40$

$1$ liter cost ↔ $\dfrac{42.40}{40}=1.06$

$70\ \text{liters cost}\ \rightarrow1.06\times 70=$£$74.2$