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The ratio of experienced plumbers to inexperienced plumbers is nine to

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The ratio of experienced plumbers to inexperienced plumbers is nine to  [#permalink]

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New post 24 Dec 2017, 00:02
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A
B
C
D
E

Difficulty:

  15% (low)

Question Stats:

94% (00:51) correct 6% (02:06) wrong based on 26 sessions

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The ratio of experienced plumbers to inexperienced plumbers is nine to eight. If there are sixty-eight plumbers working on a project together, how many more experienced plumbers than inexperienced plumbers are working on the project?

A. 1
B. 4
C. 17
D. 32
E. 36

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The ratio of experienced plumbers to inexperienced plumbers is nine to  [#permalink]

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New post 24 Dec 2017, 06:40
Experinced / In experienced ratio is 9/8.

Find common multiplier for the ratio - 9x + 8x = 17x

17x = 68 = > x = 4

9x = 36
8x = 32

and hence 4, answer choice (b)
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The ratio of experienced plumbers to inexperienced plumbers is nine to  [#permalink]

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New post 24 Dec 2017, 07:29
1
Expperienced : Inexperienced
8:9
So for a total of 17, 8 will be experience and 9 will be inexperienced and their difference 1
Here what happened
Total 17X4 Experienced 8X4 Inexperienced 9X4 and Difference 1X4. So 4

Kudos :lol:
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The ratio of experienced plumbers to inexperienced plumbers is nine to &nbs [#permalink] 24 Dec 2017, 07:29
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The ratio of experienced plumbers to inexperienced plumbers is nine to

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