$129x=y
when x is the amount of night and y is the total cost
plug in 3 for x (3 days)
$129(3)=y
$387=y
Total cost would be $387
Answer:
Solving proportions is simply a matter of stating the ratios as fractions, setting the two fractions equal to each other, cross-multiplying, and solving the resulting equation.
Example
1)
2)
Its in a whole different language.. What is it about?
Answer:
(a) C = 25r (b) 8 rooms (c) 7 rooms
Step-by-step explanation:
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(a) C=25r
(b) C = 25r
200 = 25r,
200/25 = 25r/25
200/25 = 8
8 = r, therefore 8 rooms can be cleaned for $200
(c) 200-25 = 25r
200-25=175, so 175 = 25r, then divide both sides by 25, and you get
7 = r , so therefore 7 rooms can be cleaned for $200
