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The price of an item was increased by 20 percent. The new pr
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28 Jul 2020, 10:31
28 Jul 2020, 10:31
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Question Stats:
60% (01:43) correct
40% (01:26) wrong based on 80 sessions
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The price of an item was increased by 20 percent. The new price of the item was decreased by x percent, resulting in a final price that is 28 percent less than the original price.
A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.
Kudos for the right answer and explanation
Quantity A |
Quantity B |
x |
43 |
A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.
Kudos for the right answer and explanation
Re: The price of an item was increased by 20 percent. The new pr
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28 Jul 2020, 10:43
28 Jul 2020, 10:43
1
Let original price be P.
its increased by 20%, so price becomes P*(1 + 20/100)
its decreased by x% again, so price becomes P*(1 + 20/100)*(1 - x/100)
this is equal to 28% less than the original price, which is P*(1 - 28/100)
So,
P*(1 + 20/100)*(1 - x/100) = P*(1 - 28/100)
=> 1 - x/100 = 0.72/1.2 = 0.6
=> x = 40
So, the answer is B.
its increased by 20%, so price becomes P*(1 + 20/100)
its decreased by x% again, so price becomes P*(1 + 20/100)*(1 - x/100)
this is equal to 28% less than the original price, which is P*(1 - 28/100)
So,
P*(1 + 20/100)*(1 - x/100) = P*(1 - 28/100)
=> 1 - x/100 = 0.72/1.2 = 0.6
=> x = 40
So, the answer is B.
Re: The price of an item was increased by 20 percent. The new pr
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28 Jul 2020, 16:53
28 Jul 2020, 16:53
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Carcass wrote:
The price of an item was increased by 20 percent. The new price of the item was decreased by x percent, resulting in a final price that is 28 percent less than the original price.
A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.
Kudos for the right answer and explanation
Quantity A |
Quantity B |
x |
43 |
A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.
Kudos for the right answer and explanation
Let the original price equal $100. That means that the second price equals $120 and the final price equals $72. To find the percent change between 120 and 72, use the equation (120-72)/120 for a solution of .4, or 40%. This is less than 43, so B is the correct answer
