He travelled 235 miles to the nearest 5 miles The journey took him 200 minutes to the nearest five minutes Calculate the lower bound for the average speed of the journey
+8581 235 miles correct to the nearest 5 miles means anywhere between 232.5<=d<237.5
200 minutes to the nearest 5 minutes means from 197.5 <=t< 202.5
speed will be in miles per minutes. the upper bound is when the numerator is high and the denominator is low, that is
237.5/197.5=1.2025 miles per minute.
The lower bound would be the slowest speed divided by the most time, 232.5/202.5=1.148 miles per minute.
Hope this helped!!
:)
