eric has been donating books he no longer needs to his local library. after 3 months of donating, he had 157 books left in his room. after 8 months of donating, he had 102 books left in his room. how many books per month did eric donate on average between monhs 3 and 8?
Answers
Answer 1
Answer:
157 - 102 = 55
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8-3 = 5
55/5 = 11 books
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8-3 = 5
55/5 = 11 books
Answer 2
Answer:
he donated 18 books per month. you first finds the difference of the books then do use the number of books by the number of months (in this case it was 5 months)
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Answers
5
6
You just divide each by one of there common factors (except from 1 and 0)
Eg.10÷2=5
12÷2=6
This would look like:
10/12
Next look for a common divisor that works for both the top (numerator) and bottom (denominator) numbers. Incidentally, think 'Notre Dame' or ND if you cannot remember which is which.
Dividing by 2 works for both numbers, so dividing the '10' and the '12' by 2 gives you a simplified form of 5/6.
And voila! That's your answer!
10/12
Next look for a common divisor that works for both the top (numerator) and bottom (denominator) numbers. Incidentally, think 'Notre Dame' or ND if you cannot remember which is which.
Dividing by 2 works for both numbers, so dividing the '10' and the '12' by 2 gives you a simplified form of 5/6.
And voila! That's your answer!