A car used 4 L of petrol after it travelled 56 km. How many kilometres can the car travel on 1L of petrol?
A car used 4 L of petrol after it travelled 56 km.How much petrol is needed for the car to travel 322 km?
The cost of carpeting an area of 30 square metres is $1500. What is the cost of carpeting a square metre?
The cost of carpeting an area of 30 square metres is $1500. Mr Tan pays $2250 to carpet his office. What is the area of Mr Tan's office?