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There are two dock workers, Alf and Bob. Alf can load 16 tons of steel

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There are two dock workers, Alf and Bob. Alf can load 16 tons of steel  [#permalink]

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New post 11 Feb 2019, 01:53
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Question Stats:

90% (01:33) correct 10% (01:38) wrong based on 31 sessions

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There are two dock workers, Alf and Bob. Alf can load 16 tons of steel per day, and Bob can load 20 tons per day. If they each work eight-hour days, how many tons of steel can the two of them load in one hour, assuming they maintain a steady rate?

(A) 2.5
(B) 4.5
(C) 36
(D) 160
(E) 320

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Re: There are two dock workers, Alf and Bob. Alf can load 16 tons of steel  [#permalink]

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New post 11 Feb 2019, 02:38
Bunuel wrote:
There are two dock workers, Alf and Bob. Alf can load 16 tons of steel per day, and Bob can load 20 tons per day. If they each work eight-hour days, how many tons of steel can the two of them load in one hour, assuming they maintain a steady rate?

(A) 2.5
(B) 4.5
(C) 36
(D) 160
(E) 320



Alf per hr rate = 16/8 = 2 tonnes per hr
Bob per hr rate = 20/8 = 5/2

total 2+ 2.5 = 4.5
IMO B
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Re: There are two dock workers, Alf and Bob. Alf can load 16 tons of steel  [#permalink]

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New post 23 Feb 2019, 09:10
Very easy question but I got tricked by thinking that the word day is 24 hours instead of 8 hours.

So I initially did 16/24 for 14 tonnes per 24 hours.
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Re: There are two dock workers, Alf and Bob. Alf can load 16 tons of steel   [#permalink] 23 Feb 2019, 09:10
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There are two dock workers, Alf and Bob. Alf can load 16 tons of steel

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