Question

Narayan Murthy walking at a speed of 20 km/h
reaches his college 10 minutes late. Next time he
increases his speed by 5 km/h, but finds that he is
still late by 4 minutes. What is the distance of his
college from his house?
(a) 20 km
(b) 6 km
(c) 12 km
(d) None of these​

Answer 1

Step-by-step explanation:

Let's take actual time required be 'a' hours

and the actual distance be 'b' kms

then by solving the equations you will get the actual distance is 10 km.(see the photo attached)