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March 9, 2014

# Homework Help: Math Urgent

Posted by Anonymous on Wednesday, April 17, 2013 at 12:55pm.

17.

A box contains 95 pink rubber bands and 90 brown rubber bands. You select a rubber band at random from the box. Find each probability. Write the probability as a fraction in simplest form.

a. Find the theoretical probability of selecting a pink rubber band.
b. Find the theoretical probability of selecting a brown rubber band.
i don't know what to do on this can u help me please

• Math Urgent - Steve, Wednesday, April 17, 2013 at 1:54pm

185 total bands

90/185 are brown
95/185 are pink

Those same values are the probabilities of picking one.

Don't be put off by the big numbers. If there had been 1 brown and 2 pink, would you have had trouble?

• Math Urgent - zero probability, Wednesday, April 17, 2013 at 3:12pm

a) 95+90=185
therefore: Ppink=95/185
=19/37

b) Pbrown=90/185
=18/37

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