4 televisions and 3 refrigerators cost a total of $2343. Each television costs twice as much as each refrigerator.
- What is the cost of each television?
- What is the total cost of 1 television and 1 refrigerator?
(a)
Cost of 1 refrigerator = 1 u
Cost of 1 television = 2 x 1 u = 2 u
Cost of 3 refrigerators = 3 x 1 u = 3 u
Cost of 4 televisions = 4 x 2 u = 8 u
Total cost of 4 televisions and 3 refrigerators
= 8 u + 3 u
= 11 u
11 u = 2343
1 u = 2343 ÷ 11 = 213
Cost of each television
= 2 u
= 2 x 213
= $426
(b)
Total cost of 1 television and 1 refrigerator
= 2 u + 1 u
= 3 u
= 3 x 213
= $639
Answer(s): (a) $426; (b) $639