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A student is collecting signatures for a petition to change an unfavorable school rule. One lunch shift the student collected 70 signatures. This is the signatures required for the petition. How many signatures did the student need?

A Student Is Collecting Signatures For A Petition To Change An Unfavorable School Rule One Lunch Shift The Student Collected 70 Signatures This Is The Signature class=

Sagot :

280

1) Given that 70 signatures are equivalent to 1/5 of the total, then let's find how many signatures are equivalent to 4/5. Since the student collected 1/5 of those let's find out how many he/she needed.

Since the question does not mention any percentage we'll assume that the student needs the signatures of everyone to decide that matter.

5/5 = 1/5 + 4/5

1 = 1/5 +4/5

2) Writing this as a proportion:

signatures students

70 1/5

x ---------------------------4/5

[tex]\begin{gathered} 70\text{ --------- }\frac{1}{5} \\ x\text{ --------- }\frac{4}{5} \\ 70\times\frac{4}{5}=\frac{1}{5}x \\ 56=\frac{1}{5}x\text{ x5} \\ 280=x \end{gathered}[/tex]

3) So the number of signatures needed was 280 since the whole school had 350 students. And 350 signatures yes or no would decide that.

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