A bag contains 13 dark chocolates, 16 white chocolates, and 11 milk chocolates. Maggie’s class teacher, Jill, is very strict, and the probability that she offers her students chocolates is 0.4. If Jill offers Maggie a chocolate from the bag, what is the probability that she randomly picks either a white chocolate or a milk chocolate?

Question

anonymous · Answer

How many chocolates all together?

anonymous · Answer

i guess 40

anonymous · Answer

Right. What's the probability of choosing either a white choco or a milk choco out of the bag?

anonymous · Answer

the answer 27/40 ?

anonymous · Answer

You're almost there. Convert that 27/40 into a decimal. What do you get?

anonymous · Answer

0.675

anonymous · Answer

Great. Now there's only a probability of 0.4 that the teacher will give out any chocolates at all. So you must multiply your result by that probability of 0.4. What do you get?

anonymous · Answer

0.27

anonymous · Answer

Exactly. That's your answer. Good work.

anonymous · Answer

thanks