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chaitanya.mehrotra
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A cyclist travels the length of a bike path that is 225 miles long, rounded to the nearest
mile. If the trip took him 5 hours, rounded to the nearest hour, then his average speed must be between:
(A) 38 and 50 miles per hour
(C) 40 and 51 miles per hour
(E) 41 and 51 miles per hour
(B) 40 and 50 miles per hour
(D) 41 and 50 miles per hour
As per the solution in the book , If the cyclist rode 225 miles, rounded to the nearest mile, and took 5 hours, rounded to the nearest hour, he traveled between 224.5 miles and 225.5 miles, and took between 4.5 and 5.5 hours.
Doubt: How come we have taken 225.5 miles ? If round this it will become 226 thus max it can be 225.4 .
Similarly how come we have taken 5.5 hours ?If round this it will become 6 thus max hours could be 5.4 .
mile. If the trip took him 5 hours, rounded to the nearest hour, then his average speed must be between:
(A) 38 and 50 miles per hour
(C) 40 and 51 miles per hour
(E) 41 and 51 miles per hour
(B) 40 and 50 miles per hour
(D) 41 and 50 miles per hour
As per the solution in the book , If the cyclist rode 225 miles, rounded to the nearest mile, and took 5 hours, rounded to the nearest hour, he traveled between 224.5 miles and 225.5 miles, and took between 4.5 and 5.5 hours.
Doubt: How come we have taken 225.5 miles ? If round this it will become 226 thus max it can be 225.4 .
Similarly how come we have taken 5.5 hours ?If round this it will become 6 thus max hours could be 5.4 .
