Ajay Kumar Solutions for Chapter: Numerical Ability, Exercise 10: Practice set

Preetam covers a certain distance by jeep driving at $80$ km/hr and returns to the starting point riding on a scooter at $60$ km/hr. Find his average speed for the whole journey?

Meenal starts at S and walks at a steady pace once around the perimeter of the square park. Which graph best represents her distance from S as time passes?

A float is drifting in a river, $10$ m downstream of a boat that can be rowed at a speed of $10$ m/min in still water. If the boat is rowed downstream, the time taken to catch up with the float:

A car travels downhill at $72$ km/h. On level ground, it travels at $63$ km/h, and uphill at only $56$ km/h. The car takes $4$ hours to travel from town A to town B. The return trip takes $4$ hours and $40$ minutes. Find the distance between the two towns?

During the Onam festival in Kerala, one boat is rowed downstream at $15.5$$km/hr$ and upstream at $8.5$$km/hr.$ What is the speed of the stream?

A boatman goes $2$ $km$ against the current of the stream in $1$ $hours$ and goes $1$ $km$ along with the current in $10$ $minutes$minutes. How long will he take to go $5$ $km$ in stationary water?

A man starts his journey at$01:00$ $hours$ local time to reach another country at $09:00$ $hours$ local time on the same date. He starts a return journey on the same night at $21:00$ $hours$ local time to his original place, taking the same time to travel back. If the time zone of his country of visit lags by $10$ $hours$, the duration for which the man was away from his place is:

Bangkok is east of Johannesburg and New York is west of Johannesburg. Flight time from Johannesburg to Bangkok is $11$ $hours$ and $40$ $minutes$ and the time difference is $7$$hours$. Flight time from Johannesburg to New York is $15$ $hours$ and the time difference is $8$ $hours$. Flight time from New York to Bangkok is $17$$hours$. If I depart from Johannesburg at $06:00$ ( SA time and fly to New York stopover $24$ $hours$, and then fly to Bangkok, what will the local Bangkok time be when I arrive there?