2 washing machines and 5 televisions cost a total of $1710. 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 5 televisions = 5 x 1 u = 5 u
Cost of 2 washing machines = 2 x 2 u = 4 u
Total cost of 2 washing machines and 5 televisions
= 4 u + 5 u
= 9 u
9 u = 1710
1 u = 1710 ÷ 9 = 190
Cost of each washing machine
= 2 u
= 2 x 190
= $380
(b)
Total cost of 1 washing machine and 1 television
= 2 u + 1 u
= 3 u
= 3 x 190
= $570
Answer(s): (a) $380; (b) $570
