In one semester, Doug and Laura spent a combined 250 hours in the tutoring lab. If Doug spent 40 more hours in the lab than Laura did, how many hours did Laura spend in the lab?

Last week Raul worked 11 more hours than Angelica. If they worked a combined total of 59 hours, how many hours did Angelica work last week?

John rode his bicycle to town at the rate of 15 milles per hour. He left the bicycle in town for minor repairs and walked home along the same route at the rate 3 miles per hour. Excluding the time John spent in taking the bike into the repair shop, the trip took 3 hours. How many hours did John take to walk back?

Wade is making a tile mosaic . He begins the project by laying tile at a speed of 50 pieces per hour for 3.5 hours . He is then interrupted from his work for 60 minutes . He resume working and lays tile at a speed of 35 pieces per hours until he has laid 280 pieces of tile total. How many hours did Wade spend working on the mosaic after he started working again ?

A can do 50% more work than B in the same time. B alone can do a piece of work in 30 hours. B starts working and had already worked for 12 hours when A joins him. How many hours should B and A work together to complete the remaining work ?

The parking charges of a car in Hyderabad Railway station for first two hours is 50 and 10 for each subsequent hour. Write down an equation and draw the graph. Find the following charges from the graph (i) For three hours (ii) For six hours (iii) How many hours did Rekha park her car if she paid 80 as parking charges?

The parking charges of a car in Hyderabad Railway station for first two hours is 50 and 10 for each subsequent hour. Write down an equation and draw the graph. Find the following charges from the graph (i) For three hours (ii) For six hours (iii) How many hours did Rekha park her car if she paid 80 as parking charges?

The parking charges of a car in Hyderabad Railway station for first two hours is 50 and 10 for each subsequent hour. Write down an equation and draw the graph. Find the following charges from the graph (i) For three hours (ii) For six hours (iii) How many hours did Rekha park her car if she paid 80 as parking charges?

Two pipes together can fill a reservoir in 12 hours. If one pipe can fill the reservoir 10 hours faster than the other, how many hours will the second pipe take to fill the reservoir ?

If two pipes function simultaneously, a reservoir will be filled in 12 hours. One pipe fills the reservoir 10 hours faster than the other. How many hours will the second pipe take to fill the reservoir?