At the Corio supermarket, shopping trolleys are 1 metre long. You work collecting them and stacking them into an area. Each shopping trolley that is added to the stack adds on 25 cm. How long would the line be if you stacked 20 trolleys?
+2353 Okay, so here's what happens.
The first cart has a length of 1 meter and every cart which is next in line will add 25 cm.
Therefore 1 trolley will take up 1 meter and the other 19 will take up 25cm.
Therefore the total stack will have a length of 1 + 19*0.25 = 5.75 meters
Reinout 
+2353 Okay, so here's what happens.
The first cart has a length of 1 meter and every cart which is next in line will add 25 cm.
Therefore 1 trolley will take up 1 meter and the other 19 will take up 25cm.
Therefore the total stack will have a length of 1 + 19*0.25 = 5.75 meters
Reinout
