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If Biff can shape 3 surfboards in 50 minutes, how many surfboards can

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If Biff can shape 3 surfboards in 50 minutes, how many surfboards can [#permalink]

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If Biff can shape 3 surfboards in 50 minutes, how many surfboards can he shape in 5 hours?

(A) 16 (B) 17 (C) 18 (D) 19 (E) 20
[Reveal] Spoiler: OA

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Re: If Biff can shape 3 surfboards in 50 minutes, how many surfboards can [#permalink]

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New post 08 Sep 2017, 08:09
SajjadAhmad wrote:
If Biff can shape 3 surfboards in 50 minutes, how many surfboards can he shape in 5 hours?

(A) 16 (B) 17 (C) 18 (D) 19 (E) 20

In 5 hours, Biff can shape \(S\) surfboards

\(\frac{3S}{50mins} * \frac{60mins}{1hr} * 5 hrs\) = 18 surfboards

Answer C

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Re: If Biff can shape 3 surfboards in 50 minutes, how many surfboards can [#permalink]

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New post 08 Sep 2017, 08:44
SajjadAhmad wrote:
If Biff can shape 3 surfboards in 50 minutes, how many surfboards can he shape in 5 hours?

(A) 16 (B) 17 (C) 18 (D) 19 (E) 20


5 hours = 300 minutes.

This is 6 times Bill takes to shape 3 surfboards.
Hence, he will shape 6 times as many boards - 18(Option C)
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Re: If Biff can shape 3 surfboards in 50 minutes, how many surfboards can [#permalink]

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New post 10 Sep 2017, 20:49
SajjadAhmad wrote:
If Biff can shape 3 surfboards in 50 minutes, how many surfboards can he shape in 5 hours?

(A) 16 (B) 17 (C) 18 (D) 19 (E) 20



3 surfboards in 50 mins . so 3*6 in 300 mins;

Ans:C 18

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Re: If Biff can shape 3 surfboards in 50 minutes, how many surfboards can [#permalink]

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New post 11 Sep 2017, 15:53
SajjadAhmad wrote:
If Biff can shape 3 surfboards in 50 minutes, how many surfboards can he shape in 5 hours?

(A) 16 (B) 17 (C) 18 (D) 19 (E) 20


Note that 5 hours = 5 x 60 = 300 minutes. We can set up a ratio:

3/50 = x/300

50x = 900

x = 18 surfboards in 5 hours

Answer: C
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Re: If Biff can shape 3 surfboards in 50 minutes, how many surfboards can   [#permalink] 11 Sep 2017, 15:53
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