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3 years ago

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5/8 of the 64 musicians in a music contest are guitarists. Some of the guitarists play jazz solos, and the rest play classical s

olos. The ratio of the number of guitarists in the contest is 1:4. How many guitarists play classical solos in the contest?

1 answer:

dimulka [17.4K]3 years ago

7 0

First, find the number of guitarists. 5/8*64=40.

Now, create an equation. x + 4x = 40
5x = 40
x= 8

There are 8 jazz solos and 32 classical solos.

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nirvana33 [79]

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Taya2010 [7]

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Probablity of drawing a Red marble (R) and then a blue marble (B) without being replaced,

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$\begin{gathered} \text{Prob of a red marble P(R) =}\frac{9}{20} \\ \text{Prob of }a\text{ blue marble =}\frac{4}{19} \\ \text{After a marble is selected without replacement, marbles left is 19} \\ \text{Prob of red marble + prob of blue marble = P(R) + P(B) = }\frac{9}{20}+\frac{4}{19}=\frac{251}{380} \\ \text{Hence, the probability is }\frac{251}{380} \end{gathered}$

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