Question

It takes Adara 3 hours to drive from Ashdown to Bridgeton at an average speed of 60 mph.

She then drives 30 miles from Bridgeton to Carton at an average speed of 70 mph.
Assuming Adara doesn't stop, what is her average speed from Ashdown to Carton to 1 dp?
please helppppp

Answer 1

61.2 mph

Explanation:

Let's first calculate the individual legs of Adara's trip in terms of both time and distance:

Ashdown to Bridgeton

3 hr at 60 mph = 180 miles in 3 hours

Bridgeton to Carton

30 miles at 70 mph: 30 miles/(70 miles/hour) = 0.429 hours

Total Trip

Miles = 180 + 30 = 210 miles

Time = 3 + 0.429 = 3.429 hours

Average speed is (210 miles)/(3.429 hours) = 61.25 or 61.2 miles/hour to 1 decimal point.