A lorry driver buys 18 gallons of petrol. He receives one free glass for every 5 gallons. How many glasses does he receive?

well, 5*3 = 15, so ...

I need your help about this

To find out how many glasses the lorry driver receives, we need to divide the total amount of petrol he buys by the amount of petrol required for each free glass.

The lorry driver buys 18 gallons of petrol and receives one free glass for every 5 gallons.

So, we need to divide 18 by 5.

18 ÷ 5 = 3.6

Since we can't have a fraction of a glass, we round down to the nearest whole number.

Therefore, the lorry driver receives 3 glasses in total.

To find out how many glasses the lorry driver receives, you need to determine the number of sets of 5 gallons that can be made from the total amount of petrol.

To do this, divide the total amount of petrol purchased, which is 18 gallons, by 5:

18 gallons ÷ 5 gallons = 3 sets

This means that the lorry driver can make 3 sets of 5 gallons.

Since the driver receives one free glass for every set of 5 gallons, we conclude that the driver receives 3 glasses in total.