3 washing machines and 4 computers cost a total of $2960. Each washing machine costs twice as much as each computer.
- What is the cost of each washing machine?
- What is the total cost of 1 washing machine and 1 computer?
(a)
Cost of 1 computer = 1 u
Cost of 1 washing machine = 2 x 1 u = 2 u
Cost of 4 computers = 4 x 1 u = 4 u
Cost of 3 washing machines = 3 x 2 u = 6 u
Total cost of 3 washing machines and 4 computers
= 6 u + 4 u
= 10 u
10 u = 2960
1 u = 2960 ÷ 10 = 296
Cost of each washing machine
= 2 u
= 2 x 296
= $592
(b)
Total cost of 1 washing machine and 1 computer
= 2 u + 1 u
= 3 u
= 3 x 296
= $888
Answer(s): (a) $592; (b) $888
