Answers

1. Answer:

   18.4%

   Step-by-step explanation:

   – Prime numbers between 20 and 30: 23, 29

   Let’s use 23. We now have to find the % of 23 of 125.

   23/125 = 0.184 ( / = divided by)

   To turn this into a %, we multiply by 100.

   0.184 x 100 = 18.4

   Therefore, x may equal 18.4

   To check:

   18.4% of 125

   18.4 x 125 =

   23

   Therefore, 18.4% is the correct answer.

   Hope this helps.

   – profparis

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2. There are two prime numbers between 20 and 30: 23 and 29.

   To find the percentage each number is of 125, you’d divide the number by 125 and move the decimal in the answer 2 places to the right to turn it to percentage notation (from decimal notation), so you’d solve 23/125 and 29/125.

   23/125= .184
   Moving the decimal two places to the right makes this 18.4%

   29/125= .232
   Moving the decimal two places to the right makes this 23.2%

   X has two possible values of which you are to pick/use only one: 18.4 and 23.2

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