.
We will be happy teach you and help you, but under one indispensable condition:
You will post ONE and ONLY ONE problem per post.
It is the RULE and the POLICY of this forum.
Please respect the rules and the tutors.
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This time I will do for you # 5 only.
5. It took Nilo five thirds of an hour to complete his Math on Wednesday, three fourths of an hour on Thursday,
and five sixths of an hour on Friday. How many hours did he take to complete his homework altogether?
of an hour on Wednesday;
of an hour on Thursday;
of an hour on Friday.
They want you ADD these three fractions and find their sum
+ +
To add fractions, you write them with the common denominator, which is the number 24.
So, I write the fraction (separately) with the common denominator
= = ;
= = ;
= = .
Now we can easily add our fractions
+ + = + + = now I add the numerators and use the common denominator = =
= = = = 3 = 3 hours = 3 hours and 15 minutes.
The solution is completed. The answer is 3 hours and 15 minutes.
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There is another way to solve the problem.
It is to convert every fraction from hours to minutes and add minutes.
of an hour = 5*20 minutes = 100 minutes.
of an hour = 3*15 minutes = 45 minutes.
of an hour = 5*10 minutes = 50 minutes.
Total time = 100 + 45 + 50 minutes = 195 minutes = 180 minutes + 15 minutes = 3 hours and 15 minutes.
You get THE SAME answer.
Solved two times by different methods for your better understanding.
Do you understand everything and every step ?
Please let me know.
Happy learning (!)
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In order for better understand your needs, may I ask a question ?
In your post, I see the problems for totally different ages and levels.
Problem 5 is for 4th grade level;
problems 3 and 4 are for 7th-8th grade.
Why do you combine different level problems into one package ?