Answer:
The answer is 18 times the number given in the survey.
Step-by-step explanation:
The survey sample is an example of the 396 students. If there are 22 classmates in the survey, you need to turn 22 into 396 for it to work. 22 times 18 equals 396, therefore 18 times the number of green in the survey.
The number of square feet of grass can Richard fertilize in an hour is 5,980.
Given that,
Based on the above information, the calculation is as follows:
= 5,980
Therefore we can conclude that the number of square feet of grass can Richard fertilize in an hour is 5,980.
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And 92.7556 rounded to one decimal place
Both brothers paint the room together, it will take 2 hours 22 minutes.
Given that,
David can finish painting the room in 6 hours,
And his elder brother Antony can finish it in 4 hours.
We have to determine,
If both brothers paint the room together, how many hours will it take them.
According to the question,
David can finish painting the room in 6 hours,
And his elder brother Antony can finish it in 4 hours.
The combined time is given by the following formula.
Therefore,
For both brothers paint the room together, how many hours will it take them,
Taking reciprocal of both brothers time.
Then,
Which is equals to 2 hours 22 minutes.
Hence, Both brothers paint the room together, it will take 2 hours 22 minutes.
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Answer:
Step-by-step explanation:
1/6+1/4=5/12
5/12 of the job is done in 1 hour
so
5/12+5/12= 10/12
so 10/12 of the job is done in 2 hours
and then simplify 5/6 so then add 1/6
so it is done in 2 hours and 24 minutes