80 coins are placed in a line on the ground. the distance between any two consecutive coins is 10 metres. how far must the person travel to bring them one by one to a bag placed 10 metres behind the First coin
Answers
Answered by
0
Step-by-step explanation:
Person will put his bag and thereafter travels 10 m
to reach the nearest coin and then travels 10 m back to put the nearest coin in the bag. Tus total distance travelled for putting the nearest coin in bag = 20 m. Similarly for second nearest coin this will be 40 m .
Tota distance travelled =
20 + 40 + 60 + 80 + upto 80 terms.
= 80/2 { 2 ×20 + (80 - 1) 20 } = 4800 m
Similar questions