2 laptops and 5 refrigerators cost a total of $2101. Each laptop costs thrice as much as each refrigerator.
- What is the cost of each laptop?
- What is the total cost of 1 laptop and 1 refrigerator?
(a)
Cost of 1 refrigerator = 1 u
Cost of 1 laptop = 3 x 1 u = 3 u
Cost of 5 refrigerators = 5 x 1 u = 5 u
Cost of 2 laptops = 2 x 3 u = 6 u
Total cost of 2 laptops and 5 refrigerators
= 6 u + 5 u
= 11 u
11 u = 2101
1 u = 2101 ÷ 11 = 191
Cost of each laptop
= 3 u
= 3 x 191
= $573
(b)
Total cost of 1 laptop and 1 refrigerator
= 3 u + 1 u
= 4 u
= 4 x 191
= $764
Answer(s): (a) $573; (b) $764
