Answer:
380160 people
Explanation:
Given
the length of the road=3.5 mile =3 × 5280 ft
( 1 mile = 5280 ft). = 15840 ft
the width of the road= 60 ft
now calculate the area of the road
the area of the road= length × width
= 15840×60
==950400 square ft
each person needs 2.5 square ft of space
=> 2.5 square ft is needed by 1 person
=>1 square ft is needed by 1/2.5 person
=> 950400 square ft is needed by (1/2.5)(950400)
==380160
so,
total people= 950400/2.5
==380160