Answer:
the sum of four consecutive whole number is 150
a. let x represent the first number. write expression to represent the other three numbers.
1st: x
2nd: x+1
3rd: x+2
4th: x+3
write and solve an equation to find the four numbers
Add those expressions to get:
4x+6 = 150
4x = 144
x = 38
x+1 = 39
x+2 = 40
x+3 = 41
Step-by-step explanation:
4000+20x=11000
20x=11000-4000
20x=7000
20/20x=7000/20
x=350 $tudents.
Answer:
2:15 pm
Step-by-step explanation:
The time that Theo finishes is the sum of the start time and the duration of the cleaning. The duration is the sum of the cleaning times for each of the rooms and the break time.
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<h3>sum of minutes</h3>
It is convenient to convert all of the times to minutes, then convert the total back to hours and minutes.
kitchen +lounge +bedroom +bathroom +breaks
= (60 +50) +(55) +(1/2×60) +(35) +(85)
= 110 +55 +30 +35 +85
= 315 . . . . minutes
<h3>minutes and hours</h3>
There are 60 minutes in an hour, so the sum is ...
(315/60) hours = 5 15/60 hours = 5:15 . . . . written as hours : minutes
Then the time Theo finishes is ...
9:00 +5:15 = 14:15 = 2:15 pm
Theo will finish cleaning at 2:15 pm.
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<em>Additional comment</em>
On a 24-hour clock, hours after noon are numbered 13, 14, 15, ... to 23 at 11 pm. The 12-hour representation of the pm hours can be found by subtracting 12 from the hour number.
How much do they charge per hour?
If thy charged $10 an hour it is $100
Multiply the number of $$ per hour times how many hours