Question

If a student runs 400 m every morning, find the difference between the distance he covers in the month of January and February. Consider the given year as a leap year.

Answer 1

Distance covered every morning = 400 m
Number of days in January = 31
Total distance covered for the month of January = $31\times 400$
= 12400 m
Number of days in February = 29
Total distance covered for the month of February = $29\times 400$
= 11,600 m
Difference in distance covered in both the months = 12400 - 11600 = 800 m
Alternatively,
difference in the number of days between both the months = 2
Distance covered every morning = 400 m
Difference in the distance covered = $400\times 2$ = 800 m