contestada

A horse ran at a constant speed for 4 hours. Then, it decreased its speed by 7 mph for the
remaining 442 miles. If the total distance was 730 miles, how long did it take to travel the
remaining 442 miles?
14.7
6.8
• 6.5
7.2

Respuesta :

thedemon840

Distance travelled in 4 hours...

730 - 442 = 288 miles

Speed for the 4 hours;

Speed = 288/4 = 72 miles/hour

Speed for the rest of 442 miles...;

(72 - 7) = 65 miles/hour

Time taken for 442 miles..

Time taken = Distance/Speed

; 442/65 = 6.8

Time taken = 6.8 hours

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