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svetoff [14.1K]
3 years ago
15

Leo has one week to read his 280 page library book.he wants to read one seventh of his book each night. how many pages will he n

eed to read?
Mathematics
2 answers:
nevsk [136]3 years ago
4 0
280 divided by 7 = 40 pages every night
(28/7=4, add a zero)
BabaBlast [244]3 years ago
4 0
280/7=40 40 pages per night hope i helped
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Answer:

Step-by-step explanation:

l = length

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We know the length is twice the breadth, therefore l = 2b

We also know that the perimeter p = 60m and can also be expressed as a sum of its sides where p = l + l + b + b = 60 which simplified is:

60 = 2l + 2b

Now we have 2 variables, but thankfully we were given a ratio (l = 2b) relating the two. Substituting 2b in for l gives us:

60 = 2(2b) + 2b = 4b + 2b = 6b

60 = 6b

b = 10 m

Now that we know the breadth we can find the length:

l = 2b → l = 2(10) = 20 → l = 20 m

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