SSC GD MATHS QUIZ

A car covers $15 \mathrm{~km}, 20 \mathrm{~km}, 30 \mathrm{~km}, 12 \mathrm{~km}$ at speed of $20 \mathrm{~km} / \mathrm{h}, 30 \mathrm{~km} / \mathrm{h}, 40 \mathrm{~km} / \mathrm{h}$ and $30 \mathrm{~km} / \mathrm{h}$ respectively . The average speed of the car for the total journey is :

Apurva travelled equal distances at speeds of 10km/hr , 20km/hr , and 6 km/hr, and took a total time of 19 minutes. Find the total distance travelled in km.

Walking at $4 \mathrm{~km}$ per hour, Atul reaches his school 5 minutes late. If he walks at $6 \mathrm{~km} / \mathrm{h}$, he will be 5 minutes early. The distance of Atul's school from his house is

Two buses X and Y leave from the same place and go in the same direction at speeds of 20kmph and 50kmph respectively. But, Y leaves 6 hours after X has left. How far from the starting place will the buses meet?

A man travelled from place A to B at 30 km/h and from B to C at 45 km/h. His average speed for the whole journey was 40 km/h. The ratio of distance of AB: BC is:

A train covers a distance of 56 km in 40 minutes. If its speed is decreased by 9 km/h, then the time taken by it to cover the distance of 225 km will be:

The ratio of the speeds of two trains is 2 : 7. If the first train runs 250 km in 5 hours, then the sum of the speeds (in km/h) of both the trains is:

A journey of 900 km is completed in 11 h. If two-fifths of the journey is completed at the speed of 60 km/h, at what speed (in km/h) is the remaining journey completed?

I walk at a speed of 10 km/h and cover a distance in 2 h. If I increase my speed by 5 km/h , how early would I reach my destination?

A runner takes 2 minutes 56 seconds to complete 8 rounds of a circular field of radius $14$ m. what is his speed?