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# The postal service charges \$3.20 per

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Intern
Joined: 15 Jul 2019
Posts: 12
The postal service charges \$3.20 per  [#permalink]

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06 Aug 2019, 06:46
00:00

Difficulty:

65% (hard)

Question Stats:

47% (01:44) correct 53% (02:13) wrong based on 45 sessions

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The postal service charges \$3.20 per envelope to ship envelopes that weigh one pound or less. If an envelope weighs more more than one pound, the postal service charges an initial fee of \$3.20 plus \$0.05 per ounce to ship the envelope. If the postal service charged \$5 to ship an envelope, what is the weight of the envelope? (16 ounces = 1 pound)

A) 1lb
B) 2lb 4ounces
C) 3lb 4ounces
D) 4lb 4ounces
E) 5lb 4ounces
Intern
Affiliations: National Institute of Technology, Durgapur
Joined: 22 Feb 2017
Posts: 38
Location: India
GPA: 3.6
WE: Engineering (Manufacturing)
Re: The postal service charges \$3.20 per  [#permalink]

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06 Aug 2019, 06:53
1
ScottK wrote:
The postal service charges \$3.20 per envelope to ship envelopes that weigh one pound or less. If an envelope weighs more more than one pound, the postal service charges an initial fee of \$3.20 plus \$0.05 per ounce to ship the envelope. If the postal service charged \$5 to ship an envelope, what is the weight of the envelope? (16 ounces = 1 pound)

A) 1lb
B) 2lb 4ounces
C) 3lb 4ounces
D) 4lb 4ounces
E) 5lb 4ounces

1st Sc. is a trap!! beware!! read the Q again (i fell for it!!)
let, the total weight of the envelope be 'n' ounce
Then, [3.20 + n*0.05] = 5
or, n = 36 ounce
or, n = 36/16 = [32/16+4/16]=2lbs and 4ounce
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GMAT date:- 21-12-2019

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Intern
Joined: 30 May 2019
Posts: 7
GPA: 3
Re: The postal service charges \$3.20 per  [#permalink]

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11 Aug 2019, 10:37
Total weight = x oz

3.2+0.05x = 5

0.05x=1.8
x=36

Therefore, dividing 36 by 16, we get 2.25 lbs

Re: The postal service charges \$3.20 per   [#permalink] 11 Aug 2019, 10:37
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