Astudent walked 1.5 km in 25 minutes, and then, realizing he was late, ran the remaining 0.5 km in 5 minutes. calculate his average speed on the way to school.

The average speed is 4 kilometer per hour

Solution:

Average Speed is given by formula:

A student walked 1.5 km in 25 minutes and then, realizing he was late, ran the remaining 0.5 km in 5 minutes

Therefore,

Total distance = 1.5 km + 0.5 km = 2 km

Total time taken = 25 minutes + 5 minutes = 30 minutes

Convert 30 minutes to hour

Substituting the values in above formula,

Thus average speed is 4 kilometer per hour

first, let's see what the pattern is.

58 - x = 47

46 - x = 36

x = 9

so this means that the term after 25 is 25 - 9:

the next term in the sequence is 16.