how and 10% and 5% related

Question

Find 10% and 5% of 20 how are they related.

Answer 1

(see response to other post)

Answer 2

10% of 20

0.10 · 20

2

 

5% of 20

0.05 · 20

1

 

10% of 20 is twice 5% of 20.

Answer 3

Kia,

 

Finding 10% of anything is pretty easy, it can be done by simply moving the decimal point on position left. Percent can be thought of as a fraction where the denominator is always 100. This would make 10% = 10/100 and 5% = 5/100, obviously 5% is half of 10%. When you take a percentage the result is what comes from multiplying the whole amount by the percentage.

Finding 5% is almost as easy as finding 10%, in addition to moving the decimal point like you did for 10% you take half of the number. So 10% of 20 is 2 and 5% of 20 is half that 1.

Answer 4

(see other post)

Answer 5

Cool !  You're learning percents (proportions) in word problems.

 

"Percent of" and "per" indicate ratios.    For example, 50% is half or 0.50 times total amount.

 

Problem (it's really an easy one), 10% means 0.10*total and 5% means 0.05*total.

 

I said it was simple, so I'll demonstrate that now.  Think of $1.  That's 100 cents.   10% of the dollar is 0.10*100cents or a dime.    Also, 5% of $1 is a nickel.

 

Now, the problem asks how they are related (also a proportion question).  That is, the problem wants to know how a dime is related to a nickel.    I'd say that it is twice as much, wouldn't you?    So, 10% is twice as much as 5%.

 

Look again at the problem.  They used 20, not $1.       Also note, "of" means multiply.

    So, 10% of 20  = 0.10*20 = 2

            5% of 20 = 0.05*20  = 1

Checking, yep, 2 is twice as much as 1,

 

Best wishes!