Question

The price of a diamond ring was reduced by 80% then went up by 200%. What was the percentage change in the diamond rings price

Answer 1

Answer:

Step-by-step explanation:

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Answer 2

The percentage change in the diamond rings price was 200%.

Given:

The price of a diamond ring was reduced by 80% then went up by 200%.

To find:

What was the percentage change in the diamond rings price

Solution:

Let the price of ring be x,

Price of ring reduced by 80% = x-80% of x

= x - (80x/100)

= (100x - 80x)/100

20x/100

Price of ring when increased by 200% = 20x/100 + 200% of 20x/100

= (20x/100) + (200/100 * 20x/100)

= (20x/100) + 40x/100

= (20x + 40x ) / 100

= 60x/100

Percentage change = [(60x/100 - 20x/100) / (20x/100)] * 100

= 40x/20x * 100

= 2 * 100

= 200%

The percentage change in the diamond rings price was 200%.

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