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tatyana61 [14]
3 years ago
7

during a bike challenge, riders have to collect various colored ribbons. each 1/2 mile they collect a red ribbon, each 1/8 mile

they collect a green ribbon, and each 1/4 mile they collect a blue ribbon. which colors of ribbons will be collected at the 3/4 mile marker?
Mathematics
2 answers:
Vladimir79 [104]3 years ago
8 0

Answer: Hello there!

As we know, each 1/2 mile there is a red ribbon, each 1/8 mile there is a green ribbon, and each 1/4 mile there is a blue ribbon.

We want to know which color of ribbons is in the 3/4 mile marker.

then we need to see if 3/4 is a multiple of some of the previous numbers.

Start with the red ribbons, we need to see the quotient between 3/4 and 1/2, if the result is a whole number, then 3/4 is a multiple of 1/2

this is q = (3/4)/(1/2) = (3/4)*2 = 6/4

here we haven't a whole number, then there is no red ribbon at the 3/4 mile marker.

now with the green ones:

(3/4)/(1/8) = (3/4)*8 = 24/4 = 6

there we have a whole number, this means that at the 3/4 mile marker, we will see the sixth green ribbon, then we have a green ribbon in this marker.

now with the blue:

(3/4)/(1/4) = (3/4)*4 = 3

At the 3/4 mile marker, we will see the third blue ribbon, then there is a blue ribbon in this marker.

Then we know that in the 3/4 mile marker, there are a green and a blue ribbon.

Natali [406]3 years ago
6 0
<span><u><em>The correct answer is: </em></u>
green and blue.

<u><em>Explanation</em></u><span><u><em>: </em></u>
We want to see which fractions </span></span>\frac{3}{4} is a multiple of. We know that \frac{3}{4} is a multiple of \frac{1}{4}, because \frac{1}{4}*3=\frac{3}{4}.

We can divide fractions to determine if \frac{3}{4} is a multiple of \frac{1}{2}:
\frac{ \frac{3}{4}}{ \frac{1}{2}};

in order to divide fractions, flip the second one and multiply:
\frac{3}{4})*\frac{2}{1}=\frac{6}{4}=1 \frac{1}{2}.
This did not divide evenly, so \frac{3}{4} is not a multiple of 1/2.

Checking to see if \frac{3}{4} is a multiple of \frac{1}{8}, \frac{ \frac{3}{4}}{ \frac{1}{8}};

flip the second one and multiply:
\frac{3}{4}*\frac{8}{1}=\frac{24}{4}=6.
This divided evenly, so \frac{3}{4} is a multiple of \frac{1}{8}.
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