Question

In a bag of keys, there are 14 silver keys, 7 black keys, 10 copper keys, and 4 painted keys of various colors. One key is drawn out

at random. What is the probability that the key that is drawn is silver or copper?

Answer 1

D. 24/35

Explanation:

Step one:

Given

Sample space

14 silver keys,

7 black keys,

10 copper keys, and

4 painted keys of various colors

Sample size= 14+7+10+4= 35

in probability "or" means that we need to add events.

Hence, the probability that the key that is drawn is silver

= 14/35

the probability that the key that is drawn is copper

=10/35

Step two:

The probability that the key that is drawn is silver or copper

14/35+10/35

=14+10/35

24/35