Answer:
0.9r
Step-by-step explanation:
Given,
Speed = 500 miles per hour
Time = r hours
Distance = 450 m
So,
Time = Distance/Speed
r = 450/500
r = 9/10
9/10 × r = Time
0.9r = Time
Number of hours required to cover 450miles is (9/10)hours.
" Speed is defined as the rate at which total distance covered by an object."
Formula used
Speed = (Total distance covered) / (time taken)
According to the question,
Given,
Speed = 500miles per hour
Time taken = 'r' hours
Distance travelled= 450miles
Substitute the value in the formula we get,
500 = 450 / r
⇒ r = (450 / 500)
⇒ r = (9 /10) hours
Hence, number of hours required to cover 450miles is (9/10)hours.
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