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Sagot :
[tex]1yd=3ft\to1ft=\frac{1}{3}yd\\--------------------\\2.5ft\to1\ ballon\\\\therefore\\\\18\times2.5ft=45ft\to18\ ballons\\\\45ft=45\times\frac{1}{3}yd=\boxed{15yd}\leftarrow answer[/tex]
Answer:
15 yards of ribbon does olivia need for 18 balloons
Step-by-step explanation:
Unit rate defined as the rates are expressed as a quantity 1 such as 4 meter per seconds or 5 miles per hours.
As pert the statement:
Olivia ties 2.5 feet of ribbon onto one balloon.
⇒[tex]\text{unit rate per balloon} = \frac{2.5}{1} = 2.5[/tex] ft ribbon
Use conversion:
1 feet = 1/3 yard
then;
2.5 ft = 0.833333333 yard
⇒[tex]\text{unit rate per balloon} = \frac{2.5}{1} = 0.833333333[/tex] yard ribbon
We have top find how many yards of ribbon does olivia need for 18 balloons
[tex]\text{Number of ribbons} = \text{Unit rate per balloons} \times 18[/tex]
Substitute the given values we have;
[tex]\text{Number of ribbons} = 0.83333333 \times 18 = 15[/tex] yards
Therefore, 15 yards of ribbon does olivia need for 18 balloons
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