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Yakvenalex [24]
3 years ago
7

You wash dishes for a chemistry laboratory to make extra money for laundry. You earn 12 dollars/ hour, and each shift lasts 75 m

inutes. Your laundry requires 12 quarters/load.
How many loads of laundry will each shift pay for if the cost per load rises to 16 quarters?

Please do explain in simple terms and equations. I suck at math, thank you!
Mathematics
2 answers:
melomori [17]3 years ago
8 0
It would pay with 3 loads
anygoal [31]3 years ago
5 0

Answer:  3.75 per shift

Step-by-step explanation:

Given : The amount earned by laundry = 12 dollars / hour

Since 1 dollar = 4 quarters.

Then, amount earned per hour=4\times12=48 quarters per hour.

    [By unitary method]

The time period for each shift = 75 minutes

Since 1 hour = 60 minutes

Then , 1 minute =\dfrac{1}{60} hours     [By unitary method]

Now, 75 minutes =75\times\dfrac{1}{60}=1.25 hours

Now, the total amount earned from each shift will be:-

1.25\times48=60 quarters

Now , the cost of laundry= 12 quarters/load

The cost of load after increment = 16 quarters

Then, the number of loads can be washed :-

\dfrac{\text{Total amount earned from each shift}}{\text{Cost of load after increment}}\\\\=\dfrac{60}{16}=3.75

Hence, number of loads of laundry = 3.75 per shift

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