Prakash Tiwari and Ishita Joshi Solutions for Chapter: Comparing Quantities, Exercise 7: Let's Practice

The ratio of distance covered by two cars is $6:5$. Find the ratio of their time taken when both the cars travel at the same speed.

How far will a bike travel from $9:45 \mathrm{a}.\mathrm{m}. \text{to}12:30 \mathrm{p}.\mathrm{m}.$ at a speed of $54 \mathrm{km}/\mathrm{hr}$?

The ratio of speeds of two cyclists is $4:5$. If the duration of cycling is same for both, then find the distance travelled by the second cyclist, if the first cyclist covers a distance of $18 \mathrm{km}$.

A spaceship moves at a speed of $54 \mathrm{km}/\mathrm{s}$. Find the distance covered by it in one day.

The speed of a metro train is thrice as that of a bus. Find the speed of the bus, if the metro covers $120 \mathrm{km}$ in $45 \min$.

A girl swims $400 \mathrm{m}$ in still water and then returns to the initial point (from where she started) in $20 \mathrm{minutes}$. Determine the speed of the girl.

A boy takes $3 \min$ to cover a path of $500 \mathrm{m}$ and another boy takes $3\frac{1}{2} \min$ to cover a path of $600 \mathrm{m}$. Compare the speed of both the boys and tell who moves faster?

A man is running at a speed of $3 \mathrm{m}/\mathrm{s}$ and covers a distance in $15 \sec$.Find the time taken by his pet dog to cover the same distance at a speed of $10 \mathrm{m}/\mathrm{s}$.