Dimitri can his boat downstream 15 miles in the same amount of time as it takes him to row upstream 8 miles. If the current in the river is 2 mph, how fast can Dimitri row in still water ?

Jason's car uses 20 gallons of gas to travel 400 miles. If Jason currently has 7 gallons of gas in his car, how much gas is needed to travel 200 miles?

Ali livia can wash and wax the car in 3 hours .Ahmed takes 4 hours .if they work togather ,how long will it take them ?

A basketball player have made 5 out of the last 7 free throws. How many more consecutive free throws do they need to make to have an average of 80%?

A local brewery has a vat that can be completely filled with beer from the inlet pipe in 60 minutes. The outlet pipe can completely drain a full vat in 80 minutes. If for some reason, both pipes are left open, how long would it take to completely fill an empty vat?

You earn a 75% on the first test of the quarter how many consecutive 100% test scores do you need to bring your test average up to a 95%?

Michelle, a basketball player, has made 16 of her 20 free throws this season. If she never misses again, how many free throws would she need to shoot to have a shooting percentage of 90 percent?

one hose can fill a swimming pool in 6 hour if it works by itself . a different hose needs 8 hours to fill the same pool. How long will it take to the pool if both hoses are used together?

Shelley can paint a fence in 8 hours. Karen can do it in 4 hours. How long will it take them to do the job if they work together ?

When andy and john work together, a job takes 2 hours when john does the same job alone, it will take 3 fewer hours than if andy does the job alone. How will it take andy to do the job himself?