Step-by-step.
30255.5=a90.75
Step 1: Cross-multiply.
30255.5=a90.75
(3025)*(90.75)=a*(5.5)
274518.75=5.5a
Step 2: Flip the equation.
5.5a=274518.75
Step 3: Divide both sides by 5.5.
5.5a5.5=274518.755.5
a=49912.5
Answer: the hourly cost of renting a power washer is $5
the hourly cost of renting a generator is $10
Step-by-step explanation:
Let x represent the hourly cost of renting a power washer.
Let y represent the hourly cost of renting a generator.
On his first job, he used each piece of equipment for 6 hours which cost $90. This means that
6x + 6y = 90 - - - - - - - - 1
On his second job, he used the power washer for 4 hours and the generator for 8 which cost $100. This means that
4x + 8y = 100 - - - - - - - - - - 2
Multiplying equation 1 by 4 and equation 2 by 6, it becomes
24x + 24y = 360
24x + 48y = 600
Subtracting, it becomes
- 24y = - 240
y = - 240/-24 = 10
Substituting y = 10 into equation 1, it becomes
6x + 6 × 10 = 90
6x + 60 = 90
6x = 90 - 60 = 30
x = 30/6 = 5
It depends on what you're buying. If you're buying food, the state tax of food is 9% of the total. So what you wanna do is multiply 264 times 0.09 and then at that number to your original $264
264*0.09=23.76
264+23.76=287.76
287.76 would be your total. It just depends on what you're buying, what the tax is gonna be. Hope this helped!