Solve the problem.Tracy can wallpaper 5 rooms in a new house in 40 hours. Together with her trainee they can wallpaper the 5 rooms in 21 hours. How long would it take the trainee working by herself to do the job?
A. 45 hr
B. 90 hr
C. 85 hr
D. 40 hr
Answer: A
You might also like to view...
Use the distributive property to simplify.-0.9(1.7x2 - 0.45x - 0.315)
A. -1.53x2 + 0.405x - 0.315 B. -1.53x2 + 0.405x + 0.2835 C. -1.53x2 - 0.45x - 0.315 D. -1.53x2 - 0.405x - 0.2835
Solve the problem.A building has a ramp to its front doors to accommodate the handicapped. If the distance from the building to the end of the ramp is 19 feet and the height from the ground to the front doors is 4 feet, how long is the ramp? (Round to the nearest tenth.)
A. 18.6 ft B. 19.4 ft C. 4.8 ft D. 5.7 ft
Establish the identity.sec(2?)= 
What will be an ideal response?
Solve the problem.A jet plane moving at constant speed travels 1000 miles with the wind and then 1200 miles against the wind. If the speed of the wind is 50 mph and the total flight takes 5 hours, find the speed of the plane.
A. 500 mph B. 100 mph C. 400 mph D. 450 mph