Question

Work out the missing amount in this statement.
20% of $200 = 40% of $

Answer 1

Answer:

The original price of a shirt was $20. It was decreased to $15 . What is the percent decrease of the price of this shirt.

Solution to Problem 1

The absolute decrease is

20 - 15 = $5

The percent decrease is the absolute decrease divided by the the original price (part/whole).

percent decease = 5 / 20 = 0.25

Multiply and divide 0.25 to obtain percent.

percent decease = 0.25 = 0.25 * 100 / 100 = 25 / 100 = 25%

Answer 2

Answer:

20% of $200 = 40% of $ 100

Step-by-step explanation:

20% of $200 = 40% of $

Let the missing amount in the statement be x, then

=>20% of $200 = 40% of x

=> $\frac{20}{100}$ × $200 = $\frac{40}{100}$ × x

=> $40 = $\frac{40}{100}$ × x

=> $\frac{100}{40}$× $40 = x

=> $100= x

=> x = $100 (Ans)