Ramesh drives from his home at a speed of 40 km/h and reaches his college 25 minutes late. The next day he increases his speed by 10 km/h, yet he is late by 10 minutes. How far is his college from his home?

50 km

Let distance = X km

Time difference = 25 - 10 =15 minutes

According to question ,

\(\frac{X}{40}\) -  \(\frac{X}{50}\)= \(\frac{15}{60}\)

\(\frac{X}{200}\) = \(\frac{15}{60}\)

X = 50 km

So , Distance is 50 km