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An item is being sold for $10 each. However, if a customer w [#permalink]

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31 Oct 2012, 22:39

1

This post was BOOKMARKED

00:00

A

B

C

D

E

Difficulty:

25% (medium)

Question Stats:

75% (02:48) correct
25% (01:48) wrong based on 91 sessions

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Here is another percentage problem ►

An item is being sold for $10 each. However, if a customer will “buy at least 3” they have a promo discount of 12%. Also, if a customer will “buy at least 10” items they will deduct an additional 8% to their “buy at least 3” promo price. If Sam buys 10 pcs of that item how much should he pay?

Re: An item is being sold for $10 each. However, if a customer w [#permalink]

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31 Oct 2012, 23:30

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actleader wrote:

Here is another percentage problem ►

An item is being sold for $10 each. However, if a customer will “buy at least 3” they have a promo discount of 12%. Also, if a customer will “buy at least 10” items they will deduct an additional 8% to their “buy at least 3” promo price. If Sam buys 10 pcs of that item how much should he pay?

An item is being sold for $10 each. However, if a customer will “buy at least 3” they have a promo discount of 12%. Also, if a customer will “buy at least 10” items they will deduct an additional 8% to their “buy at least 3” promo price. If Sam buys 10 pcs of that item how much should he pay?

Without any discount Sam should pay 10*10=$100. Now, the overall discount would be slightly less than 20%, thus he must pay slightly more than $80. Only answer choice D fits.

Re: An item is being sold for $10 each. However, if a customer w [#permalink]

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02 Nov 2012, 12:37

Bunuel wrote:

actleader wrote:

Without any discount Sam should pay 10*10=$100. Now, the overall discount would be slightly less than 20%, thus he must pay slightly more than $80. Only answer choice D fits.

Answer: D.

Bunuel, Where is it possible to learn more about such elimination techniques? I suppose it can help to save time and time is a very, maybe even the most valuable resource.

Re: An item is being sold for $10 each. However, if a customer w [#permalink]

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03 Nov 2012, 22:58

aah123 wrote:

Hey Bunuel, I am getting 80 after discounting 20% from $100 so why the answer is D ?

Because, the total discount is not 20% but slightly less than 20%. Notice, the discount is 8% on 12% discounted price to be precise: 19.04% (obtained from 1 - (0.88*0.92) ) What Bunuel mentioned is approximation technique, slightly less than 20, so answer must be slightly above 80.