2 dishwashers and 4 washing machines cost a total of $1576. Each dishwasher costs twice as much as each washing machine.
- What is the cost of each dishwasher?
- What is the total cost of 1 dishwasher and 1 washing machine?
(a)
Cost of 1 washing machine = 1 u
Cost of 1 dishwasher = 2 x 1 u = 2 u
Cost of 4 washing machines = 4 x 1 u = 4 u
Cost of 2 dishwashers = 2 x 2 u = 4 u
Total cost of 2 dishwashers and 4 washing machines
= 4 u + 4 u
= 8 u
8 u = 1576
1 u = 1576 ÷ 8 = 197
Cost of each dishwasher
= 2 u
= 2 x 197
= $394
(b)
Total cost of 1 dishwasher and 1 washing machine
= 2 u + 1 u
= 3 u
= 3 x 197
= $591
Answer(s): (a) $394; (b) $591
