I can work at a constant rate of 2/5 per hour. How much can i clean in 25hours?
2 answers:
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Answer:
56
Step-by-step explanation:
Basically you want to find out what is 70% of 80.
first you have to set up your problem
=
the first fraction would be the percent (70) over 100. (you always use 100)
The fraction to the left would be n over 80. the denominator (the number on the bottom) would be the whole amount. n would be the unknown number
To solve you would use the butterfly method. 80 x 70 and 100 x n. 80 x 70 is 5600 and 100 x n is 100n.
The final step is dividing. 5600 divided by 100 giving you 56
Answer:
2hrs 40 minutes
Step-by-step explanation:
The formula for distance is expressed as:
#The time taken to run:
#The time taken to walk:
#Since the distances are the same:
Hence, Dana spends 2hrs 40 minutes walking back