The sum of 333 consecutive even numbers is 787878.
what is the second number in this sequence?

26

Step-by-step explanation:

First consecutive even number = x

 Second consecutive even number =  x + 2

  Third consecutive even number =  x + 4

Add:

 x + (x + 2) + (x + 4) = 78

 3x + 6 =78

 3x = 72

 x = 24

 The second number would be 26

 The middle number of a sequence of consecutive numbers can be found by dividing the sum by the number of terms. 78 ÷ 3 = 26

54

step-by-step explanation:

30 miles

step-by-step explanation:

we know that 60 seconds equals 1 minute and 60 minutes 1 hour

44 ft       60 sec     60 min     158400   ft

  *   *   =

1 sec       1 min       1 hour         hour

we know that there are 5280 ft per mile

158400   ft       1 mile         30 miles

  *   =

1   hour               5280 ft     1 hour

so in 1 hour   it can travel 30 miles