Level 3 The total cost of the TV, the radio and the heater is $2700. The heater costs twice as much as the radio. The TV costs twice as much as the total price of the heater and radio. How much more does the TV cost than the heater?
Level 3 Tiffany, Liam and Andy have a total of 189 erasers. Tiffany and Andy have a total of 110 erasers while Liam and Andy have a total of 137 erasers. How many more erasers does Andy have than Tiffany?
Level 3 John has 2 bags and 5 packets of beads. He has a total of 124 beads. Each packet contains 8 more beads than each bag. How many beads are there in each packet?