A bicycle shop equips 60% of their bikes with a water bottle holder. 55% of the bikes they sell have a kickstand attached to
the bike. 34% of the bikes sold have both features.
-What is the probability that a randomly selected bicycle will have a kickstand or a water bottle
Holder?
A) 81%
B) 34%
C) none of these
D) 56.7%
E) 61.8%

Question

Quizplus · Accepted Answer

The probability of a bike having a kickstand or a water bottle holder is calculated using the formula P(A or B) = P(A) + P(B) - P(A and B). Here, P(A) = 0.60, P(B) = 0.55, and P(A and B) = 0.34. So, P(A or B) = 0.60 + 0.55 - 0.34 = 0.81 or 81%.

A Bicycle Shop Equips 60% of Their Bikes with a Water