Question

The number of litres of diesel used by car Y is ______.

Options

• $$\frac{72}{x-3}$$ litres

• $$\frac{72}{x+3}$$ litres

• $$\frac{72}{x}$$ litres

• $$\frac{12}{x+3}$$ litres

Answer 1

The number of litres of diesel used by car Y is `underlinebb((72)/(x + 3) litres)`.

Explanation:

Car Y travels x + 3 km on 1 litre, so for 72 km it uses 72 ÷ (x + 3) litres. The x – 3 and x expressions do not describe Y’s mileage and `12/(x + 3)` is not the amount for 72 km.