Question

five students ran a race. their times were 51, 53, 55, 56, and 60 seconds. which of these times does a sixth student have to run in order to finish faster than average time of the other students? a 54 seconds b 55 seconds c 56 seconds d 57 seconds

Answer 1

B. 55 seconds
The average equals the sum of all the numbers then divided by the amount of numbers added.
51+53+55+56+60=275
275/5=55 seconds