A person is standing at -2 location on the number line. He runs to and fro from -2 to +5 location 5 times. How much distance has he covered if he comes back to -2 location at the end?

A person is standing at -2 location on the number line. He runs to and fro from -2 to +5 location 5 times. How much distance has he covered if he comes back to -2 location at the end?
 
(a) 35 units
 
(b) 7 units
 
(c) 30 units
 
(d) 15 units
 
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Question is from Straight Line Motion in division Motion in a Straight Line of Physics – Class 11
Select the correct answer from above options 
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