The answer would be 0.3 * 15 = 4.5
Answer:
$205.35
Step-by-step explanation:
First, divide 38.85 by 7. You should get 5.55 for every 1 hour.
Then, multiply 5.55 by 37. You should get 205.35
So for 37 hours, Jim will earn 205.35
Hope this helped!
For problems such as this, it can be handy to remember that
.. 1/(1/a +1/b) = ab/(a +b)
The time required to do a job is the inverse of the rate at which the job is done. Rates are added when people work together (in math problems, not in real life).
(2:44)*(3:14)/(2:44 +3:14) = 1:28:52.3
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2:44 = 41/15 hours = 82/30 hours
3:14 = 97/30 hours
Using the formula above, we have a "working together" time of
.. (82/30)*(97/30)/(82/30 +97/30) = 82*97/(30*179) = 3977/2685 . . . hours
.. = 1 hour 28 156/179 minutes
.. = 1 hour 28 minutes 52 52/179 seconds
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Learn to use the fraction functions on your calculator. They can be very helpful.
8 - 4(-2) + 5(6)
8 + 8 + 30
=46
