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A shirt that costs k dollars is increased by 30%, then by an
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19 Aug 2018, 03:47
19 Aug 2018, 03:47
1
Expert Reply
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Question Stats:
91% (00:33) correct
8% (00:20) wrong based on 47 sessions
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A shirt that costs k dollars is increased by 30%, then by an additional 50%. What is the new price of the shirt in dollars, in terms of k?
(A) 0.2k
(B) 0.35k
(C) 1.15k
(D) 1.8k
(E) 1.95k
(A) 0.2k
(B) 0.35k
(C) 1.15k
(D) 1.8k
(E) 1.95k
Re: A shirt that costs k dollars is increased by 30%, then by an
[#permalink]
13 Oct 2019, 16:22
13 Oct 2019, 16:22
sandy wrote:
A shirt that costs k dollars is increased by 30%, then by an additional 50%. What is the new price of the shirt in dollars, in terms of k?
(A) 0.2k
(B) 0.35k
(C) 1.15k
(D) 1.8k
(E) 1.95k
(A) 0.2k
(B) 0.35k
(C) 1.15k
(D) 1.8k
(E) 1.95k
If the cost of the shirt is increased 30%, then the new price of the shirt is 130% of the original price. If the original price was k, then the new price is 1.3k.
Remember that it is this new price that is increased by 50%. Multiply 1.3k by 1.5 (150%) to get the final price of the shirt: 1.3k × 1.5 = 1.95k
Answer: E.
Re: A shirt that costs k dollars is increased by 30%, then by an
[#permalink]
09 Sep 2021, 09:06
09 Sep 2021, 09:06
1
30% increase means multiply the existing price by (1 + 30/100) = 1.30. Likewise, in case of 50% increase, it will be (1 + 50/100) = 1.50
So, We can do this in a single line: New price = k * 1.30 * 1.50 = 1.95k (E)
So, We can do this in a single line: New price = k * 1.30 * 1.50 = 1.95k (E)
