2 washing machines and 4 televisions cost a total of $2000. Each washing machine costs twice as much as each television.
- What is the cost of each washing machine?
- What is the total cost of 1 washing machine and 1 television?
(a)
Cost of 1 television = 1 u
Cost of 1 washing machine = 2 x 1 u = 2 u
Cost of 4 televisions = 4 x 1 u = 4 u
Cost of 2 washing machines = 2 x 2 u = 4 u
Total cost of 2 washing machines and 4 televisions
= 4 u + 4 u
= 8 u
8 u = 2000
1 u = 2000 ÷ 8 = 250
Cost of each washing machine
= 2 u
= 2 x 250
= $500
(b)
Total cost of 1 washing machine and 1 television
= 2 u + 1 u
= 3 u
= 3 x 250
= $750
Answer(s): (a) $500; (b) $750