2 computers and 3 televisions cost a total of $2530. Each computer costs four times as much as each television.
- What is the cost of each computer?
- What is the total cost of 1 computer and 1 television?
(a)
Cost of 1 television = 1 u
Cost of 1 computer = 4 x 1 u = 4 u
Cost of 3 televisions = 3 x 1 u = 3 u
Cost of 2 computers = 2 x 4 u = 8 u
Total cost of 2 computers and 3 televisions
= 8 u + 3 u
= 11 u
11 u = 2530
1 u = 2530 ÷ 11 = 230
Cost of each computer
= 4 u
= 4 x 230
= $920
(b)
Total cost of 1 computer and 1 television
= 4 u + 1 u
= 5 u
= 5 x 230
= $1150
Answer(s): (a) $920; (b) $1150