Groups30% of Canadian families have a dog, 30% of Canadian families have a

cat, and 50% of Canadian families have neither a dog nor a cat. What percent of Canadian families have both a cat and a dog?

Groups30% of consumers like only product A, and for every consumer that likes

only product B, 3 also like product A. If 18% of consumers like neither product, what percentage likes both?

GroupsAll geologists must pass a written test and a field test to become licensed. If 70% of geologists pass the written test and 90% of geologists pass the field test, what percent pass both tests?

(1) 10% did not pass either test. (2) 20% passed only the field test.

GroupsAll the homes for sale in a certain community are either colonial or ranch style, and either white or blue. 40% of the homes are colonial, and of the colonial homes 25% are white. If 40% of all homes are white, what percent of the ranch homes are blue?

GroupsLast month, company X sold three-quarters of the widgets it produced,

including two-thirds of its curved widgets. If three-fifths of the widgets that it produces each month are curved, what percent of the widgets that were not sold last month were curved?

GroupsIf machine x takes 4 hours to complete a job and machine y takes 5 hours to complete the same job, what is their combined rate?

GroupsIf Bill takes 5 hours to mow a lawn, John takes 4 hours to mow a lawn, and lazy Steve takes 20 hours to mow the same lawn, how many minutes would it take them together to mow the lawn?

GroupsTogether it takes three different machines 5 hours to complete a job. The first machine takes 10 hours to complete the job alone and the second machine takes 15 hours to complete the job alone. How many hours would it take the third machine alone to complete the job?

GroupsMachine x takes 4 hours to complete a job and machine y

takes 5 hours to complete the same job. Machine x works alone and completes one-half the job, and then machine x and y together complete the job. How long does it take for the entire job to be completed?

GroupsTogether it takes three different machines 5 hours to complete a job. The first machine takes 10 hours to complete the job alone and the second machine takes 15 hours to complete the job alone. What fraction of the job does the third machine get done in 15 hours?

GroupsHose A takes 2 days to fill a pool, hose B takes 3 days to fill a pool, and hose C takes 6 days to fill a pool. All three hoses are used to fill the first one-third of the pool, at which time hose B stops working and hose A and hose C continue until it is two-thirds full. At that point, hose C stops working and hose A continues until the pool is full. How long did it take to fill the entire pool?

GroupsThree truckers drive a certain distance. Trucker A takes 15 hours, trucker B takes 12 hours, and trucker C takes 8 hours. Which trucker has the fastest average speed?

GroupsBill drives a certain distance in 2.5 hours at 48 miles per hour. How long does it take John to drive the same distance at 24 miles per hour?