The drawing below shows a wall with hot and cold water pipes and power for a dishwasher. The cabinet installer has marked the layout lines for the cabinets, and measured where the services are in terms of the left hand wall and the finishing line (top) of the cabinet carcases.

Underneath is a drawing of the sink cabinet.

See if you can work out where the centre points will need to go for the three holes in the back. Enter these measurements in the boxes provided.

Note that the cabinet is viewed from the back, so the positions of the holes are in reverse to the way they appear on the wall.