Work Problems( Week 13 Evaluation) 1. Jane can mop the floor of her house in 30 minutes while her brother can do it in 20 minutes. How many minutes will it take to mop the floor if they work together? 2. An experienced worker can paint an average of 20 square feet per hour while a less experienced worker can paint 15 square feet per hour. How many less experienced workers will be needed to paint the same area as 9 experienced workers within the same time frame? 3. A water tank was full. After 2 gallons of water were poured out, the tank is full. How many gallons of water will the tank hold when it is full? 4. Josh can mow 300 square yards of grass in 3 hours. At this rate, how many minutes would it take him to mow 90 square feet of grass? 5. A work crew of 2 people requires 4 weeks and 4 days to finish a certain task. How many work days would it take a work crew of 8 people to finish the same task if each person of both crews works at the same rate? Note that each week has 5 work days. 6. 5 students were working on a project as a group at the same rate. They finished of the project in 2 hours. On the following day, only one student can continue to work on it. How many hours will be needed for him to finish the remaining project at the same rate as before? 7. Emily and John both worked the same number of hours last week. Emily was paid $13 per hour with no bonus, while John was paid $10 per hour with a total bonus of $39. If both were paid an equal amount of money last week, how many hours did Emily work during the week? 8. Nancy and David worked the same number of hours in their part-time job last week. Nancy's hourly wage is $9 and David's hourly wage is $8. They also received the same amount of bonus in addition to their hourly wages. Nancy made a total of $100 and David made a total of $90. How many hours did Nancy work last week? 9. Rene planned to work after school. If he worked 10 weeks, he would earn $188 and a MP3 player. If he worked 7 weeks, and he would earn $116 and the MP3 player. How much does the MP3 player cost? 10. It takes 5 workers 5 hours to harvest 14250 lbs of apples in the farm. At the same rate, how many hours will it take 9 workers to harvest 20520 lbs of apples? |