Question

Use the picture I provided to help me answer the math problem.

Answer 1

See below ↓↓

Explanation:

Part A

• We have to write 25% as a rate per 100

• ⇒ We know percentages are given to be the fraction of a number out of 100
• ⇒ Therefore, 25% as rate per 100 = 25/100
• ⇒ 1/4 [simplified]

Part B

• Let's take the total number of pieces of colored paper to be T
• Then 25% of T is 20
• Therefore our equation will be :
• ⇒ T x 25/100 = 20
• Bring 100 to the other side
• ⇒ 25T = 2000
• 25 is a factor of both 25 and 2000, so it cancels out, and we are left with :
• ⇒ T = 80
• There are 80 pieces of paper

Answer 2

Part A

• 25%/100%

• 1/4

Part B

• 1 → 20 pieces

• 4 → (20*4) pieces

• 4 → 80 pieces of yellow paper