A bike rider starts at 40km/hr and he increases his speed in every 1 hour by 2 km/hr. Then the maximum distance covered by him in 24 hrs is
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Step-by-step explanation:
Speed of the rider: 40km/hr
He increases his speed in every 1 hr by 2km/hr.
Distance covered by every 1 hr will be 40,42,44….upto 12terms. i.e. (for 24hrs)
Sum of 1st n terms=n/2 ( (2a+(n-1)d)
12/2 * (2*40+11*2)==>12/2 * (80+22)==>612km
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