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saul85 [17]
3 years ago
9

Can you plz tell me how to work it out plz I need it but today

Mathematics
2 answers:
Tatiana [17]3 years ago
4 0
First we gather all the information we have about the amount of miles that Carolyn runs:
Monday, Wednesday, Friday: 4 1/2 miles
Tuesday, Saturday: 2 3/4 miles
And the question is the amount of miles that she runs in 4 weeks.
So lets begin by calculating the amount of miles she runs in one week, then we just multiply by 4 and we'll have the final answer.
So, we have to add 4 1/2 three times (Monday, Wed, Friday), and 2 3/4 two times (Tuesday, Sat):
1 week Miles = 4 1/2 + 4 1/2 + 4 1/2 + 2 3/4 + 2 3/4
lets add the whole parts and the fraction parts apart:
1 week Miles = (4 + 4 + 4 + 2 + 2) + (1/2 + 1/2 + 1/2 + 3/4 + 3/4)
1 week <span>Miles = (16) + (3/2 + 6/4)
</span>we can reduce the last fraction:
1 week <span>Miles = (16) + (3/2 + 3/2)
</span>1 week <span>Miles = (16) + (6/2)
</span>1 week <span>Miles = (16) + (3)
</span>1 week <span>Miles = 19
</span>therefore Carolyn runs 19 miles each week, so for 4 weeks we have to add 19 four times or multiply it by 4, is the same:
4 weeks <span>Miles = 4*19
</span>4 weeks <span>Miles = 76
hence Carolyn runs 76 miles in 4 weeks.</span>
nignag [31]3 years ago
3 0
4 1/2 on Monday
2 3/4 on Tuesday
4 1/2 on Wednesday 
4 1/2 on Friday
2 3/4 on Saturday

If you add this all together you'll get your value for one week.
4 1/2 + 2 3/4 + 4 1/2 + 4 1/2 +<span>2 3/4  =  19
</span>
She does this for 4 weeks, so we need to either add them all together 4 times, or you can multiply by 4.

19*4 = 76 miles!

I hope this helps!

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