Question

The table shows the drink preferences of 50 shoppers at a mall.

What is the probability that 1 shopper, selected at random from the 50 surveyed, preferred either drink B or drink D.

(A)19/50
(B)9/50
(C)12/625
(D)7/25

Answer 1

P(B or D) = 7/25

Option D

Explanation:

We are looking for the probability that 1 shopper, selected at random from the 50 surveyed, preferred either drink B or drink D.

From the image, the number of shoppers for drink B = 8

While the number of shoppers for drink D = 6

Thus,probability of selecting drink B is ;P(B) = 8/50

And probability of selecting drink D is; P(D) = 6/50

Thus; probability of selecting either drink B or drink D is;

P(B or D) = 8/50 + 6/50

P(B or D) = 14/50

This breaks down to; 7/25

Thus;P(B or D) = 7/25