Average Speed

Ram can row a boat in still water at $10 \mathrm{km}/\mathrm{hour}$. He decides to go boating in a river. To row upstream he takes $2$ hours and to row downstream he takes $1\frac{1}{2}$ hours. Find the Speed of the river.

A person travels from one place to another at $30 \mathrm{km}/\mathrm{hr}$ and returns at $120 \mathrm{km}/\mathrm{hr}$. If the total time taken is $5$ hours, then find the Distance.

After travelling $50 \mathrm{km}$, a train meets with an accident and travels at ${\left(\frac{3}{4}\right)}^{\mathrm{th}}$ of the usual Speed and reaches $45$ minute late. Had the accident happened $10 \mathrm{km}$ further on it would have reached $35$ minute late. Find the usual Speed?

A person travels $50$ kilometres per hour. If he increases his speed by $10$ kilometres per hour, how many minutes will he take to cover $8000$ metres?

A person travels at the rate of $60$ miles per hour and covers $300$ miles in $5$ hours. If he reduces his speed by $10$ miles per hour, how long will he take to cover the same distance ?

A car travels $180\text{km}$ at a speed of $30\text{km}/\text{hr}$. How long does it take to travel $180\text{km}$$\left\{\text{in hr}\right\}$?

A car travels $180\text{km}$ at a speed of $20\text{km}/\text{hr}$. How long does it take to travel $180\text{km}$$\left\{\text{in hr}\right\}$?

A car travels $400\text{km}$ in $5$ hours. What is its average speed in $\text{km}/\text{hr}$?

A car travels $240\text{km}$ in $3$ hours. What is its average speed in $\text{km}/\text{hr}$?

A car travels $150\text{km}$ in $3$ hours. What is its average speed in $\text{km}/\text{hr}$?

A car travels $100\text{km}$ in $2$ hours. What is its average speed in $\text{km}/\text{hr}$?

A runner runs at an average speed of $10\text{km}/\text{hr}$ for $2\text{hr}$ . How far does she run?

A runner runs at an average speed of $20\text{km}/\text{hr}$ for $1.5\text{hr}$ . How far does she run?

A runner runs at an average speed of $10\text{km}/\text{hr}$ for $1\text{hr}$ . How far does she run?

A runner runs at an average speed of $16\text{km}/\text{hr}$ for $2\text{hr}$ . How far does she run?

A runner runs at an average speed of $8\text{km}/\text{hr}$ for $2\text{hr}$ . How far does she run?

A car travels $280\text{km}$ at a speed of $40\text{km}/\text{hr}$. How long does it take to travel $280\text{km}$$\left\{\text{in hr}\right\}$?

A car travels $120\text{km}$ at a speed of $40\text{km}/\text{hr}$. How long does it take to travel $120\text{km}$$\left\{\text{in hr}\right\}$?

A car travels $120\text{km}$ at a speed of $20\text{km}/\text{hr}$. How long does it take to travel $120\text{km}$$\left\{\text{in hr}\right\}$?

It takes $2\text{hr}$ for a cyclist to travel $60\text{km}$ at a speed of $20\text{km}/\text{hr}$.