Arihant Expert Team Solutions for Exercise 2: Practice Exercise

A certain distance is covered at a certain speed. If half of the distance is covered in double time, then the ratio of two speeds is:

Moving $\frac{6}{7}$ of its usual speeds a train is $10\min$ late. Find its usual time to cover the journey.

A car reached Delhi from Meerut in $35 \min$ with an average speed of $69 km/h$. If the average speed is increased by $36 km/h$, how long will it take to cover the same distance?

A student walks from his house at a speed of $2\frac{1}{2} km/h$ and reached his school by $6 \min$ late. Next day, he increases his speed by $1 km/h$ and reaches $6 \min$ before school time. How far is the school from the house?

A person can walk a certain distance and drive back in $6 h$. He can also walk both ways in $10 h$. How much time will he take to drive both the ways?

The man travelling by bus finds that the bus crosses $35$ electric poles in $1$ minute and the distance between two poles is $50 m$. Find the speed of the bus.

Neelam and Manish starting from the same place run at the rate of $7 km/h$ and $9 km/h$ respectively. What time will they take to be $12 km$ apart, if they walk in the same direction?

A swimmer's speed downstream is $11 km/h$ and speed of the stream is $1.5 km/h$. Find the upstream speed.