in a race, 20 balls are placed in a line at intervals of 4 meters, with the first ball 24 meters away from the starting point. a contestant is required to bring the balls back to the starting place one at a time. how far would the contestant run to bring back all balls?
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distances travelled to pic up the balls are 48,56,64,...
a = 48,d = 8
s20= 20/2{2×48+(20-1)×8}
=10/{96+152}
=2480 metre
a = 48,d = 8
s20= 20/2{2×48+(20-1)×8}
=10/{96+152}
=2480 metre
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