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What was the total amount of postage required to mail n letters?

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What was the total amount of postage required to mail n letters?  [#permalink]

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New post 01 Nov 2018, 09:42
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  15% (low)

Question Stats:

78% (00:28) correct 22% (00:33) wrong based on 48 sessions

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What was the total amount of postage required to mail n letters?
(1) n = 10
(2) Each of the letters required at least $0.32 postage.

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Re: What was the total amount of postage required to mail n letters?  [#permalink]

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New post 04 Nov 2018, 10:03
(1) n = 10

We know the number of letter but we don't know the postage cost.

(2) Each of the letters required at least $0.32 postage.

At least 0,32$ postage, we still don't know the postage cost.

(1)+(2)

We know the number of letters but we don't know the postage cost.

Answer E
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Re: What was the total amount of postage required to mail n letters?  [#permalink]

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New post 04 Nov 2018, 10:36
The answer is E. T
his question can be solved easily using Logic, no need to calculate:
in order to calculate the postage, we need to know the value of two variables: the cost of postage for each letter, and the number of letters (n). Even when combined, both statements do not provide this - since (2) only gives a range for n, and not a value.
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Re: What was the total amount of postage required to mail n letters?   [#permalink] 04 Nov 2018, 10:36
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