Answer:
The job will take <u><em>75 minutes</em></u> if the Hewlett Packard copier is broken
Step-by-step explanation:
In this question, we are tasked with calculating the amount of time it will the Xerox copier to finish making the copies whilst working alone
First, let the number of copies to make be x
Thus, the rate at which both copiers deliver when working together is x/30 copies per minute
If the Hewlett Packard is working alone, its rate is x/50 copies per minute
Let the time taken for the Xerox copier to complete its work be y minutes. Its working rate is thus x/y copies per minute
When we add the individual working rates, we have the joint working rate.
Hence, mathematically;
x/50 + x/y = x/30
Multiply through by 1/x
1/50 + 1/y = 1/30
1/y = 1/30 - 1/50
1/y = (50-30)/1500
1/y = 20/1500
20y = 1500
y = 1500/20
y = 75 minutes
Thus, the job will take 75 minutes if the Hewlett Packard copier is broken
Answer:
sum is 180 degrees i hope this helps
Step-by-step explanation:
You divide 90/60 which is an hour and you get 1.5 and you multiply that by 8..... which is 12 gallons.
B has the larger interquartile range
Answer:
About 91%
Step-by-step explanation:
According to the box plot provided :
Total number of students = 40
Minimum weight = 152 pounds
Third quartile (Q3) = 245
The approximate percentage of students that weigh 245 kg or less
About 10 of the intervals out of the 11 coverage interval of the box plot fall between 152 and 254 ; Hence,
(10 / 11) * 100
90.90
= about 91 % of the total students weigh 245 kg or less