Problema Solution
Suppose 40 out of 90 people are bowlers and 3 out of every 16 of the bowlers have their own bowling ball. At the same rates, in a group of 192 people, predict how many you would expect to have a bowling ball.
Answer provided by our tutors
40 out of 90 people are bowlers thus 40/90 = 4/9 of the people are bowlers
out of 192 people (4/9)*192 = 256/3 are bowlers
3 out of every 16 of the bowlers have their own bowling ball thus 3/16 is the fraction of the bowlers that have a ball
out of 256/3 bowlers only (3/16)(256/3) = 256/16 = 16 would be expected to have a bowling ball.