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If 70% of the members remembered the password but 21 members forgot, then how many members were there in all?

Please show work if you can
Thxs

1 Answer

3 votes

Answer:

70 members

Explanation:

Let's call the number of total members x. We know that 30% or
(3)/(10) of the members forgot, so our equation looks like this:


(3)/(10)x = 21

Then, we will multiply both sides by 10 to get rid of the fraction:

3x = 210

Finally, we will divide both sides by 3 to find out our variable, x:

x = 70

So, there are 70 members in total.

Hope this helped!

User Lucas Tettamanti
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