Step-by-step explanation:
5/10+2/10
7/10
0.7
................
Four hundred eighteen thousandths.......................
It’s d, d is the right answer
Part A.
Amount of money earned = Regular rate per hour *
Number of working hours
M = 12 x
Part B.
Amount of wages earned = Regular rate per hour *
Maximum number of regular working hours + Overtime rate per hour * Excess
working hours
T = 12 * 30 + 16 * y
T = 360 + 16 y
or
T = 16 y + 360
Part C.
Given T = 408, find y:
408 = 16 y + 360
y = 3 hrs
Therefore the total hours Gary worked that week
is,
<span>x + y = 30 + 3 = 33 hrs </span>
<span>(x = 30 since that is the maximum limit for regular working
hours)</span>
Let 
be the time it takes for pumps A, B, and C (respectively) to fill 1 tank. Then
Now,
Then
This means
and
Working together, all 3 pumps would operate at a rate of
or 1 tank in 1 hour, so the answer is D.
