A bus travelled on a level road for 5 hours at an average speed of 20 mpg faster than it travelled on a winding road. The time spent on the winding road was 3 hours. Find the average speed on the level road if the entire trip was 396 miles.

175

step-by-step explanation:

2 inches x 10 miles = 200 miles - 3 inches = 175

b. 1.25 hr

step-by-step explanation:

if you have a constant speed of 60 mph, then you have a ratio between 60 mi. to 1 hr. dividing both sides by 60 we get the ratio

1 mi. to

then mult. both sides by 75 we get the ratio

75 mi. to

simplifying we get

75 mi. to

or 1.25 hr.

t= half of the arc subtended by t.

r= half of the arc subtended by r.  

t+r= half of the arc subtended by t + half of the arc subtended by r= half of 360=180

step-by-step explanation: