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.
-Given that a randomly selected bike has a kickstand, what are the chances that it also has a water bottle holder?
A) 26%
B) 61.8%
C) 21%
D) 56.7%
E) 34%

Question

Quizplus · Accepted Answer

The probability that a bike has both a kickstand and a water bottle holder is 34%. Given that a bike has a kickstand (55%), the probability that it also has a water bottle holder is found by dividing the percentage of bikes with both features by the percentage of bikes with a kickstand: 34% / 55% = 0.618, or 61.8%.

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