(11) A rectangular field is 30 meters long and 20 meters wide. If a person walks around the field at a uniform speed of 6 meters per second, how long will it take to complete one round of the field?
- (a) 20 seconds
- (b) 25 seconds
- (c) 30 seconds
- (d) 35 seconds
(12) A man can row downstream 30 kilometers in 3 hours. If the speed of the current is 5 km/hr, what is the speed of the man in still water?
- (a) 7 km/hr
- (b) 10 km/hr
- (c) 12 km/hr
- (d) 15 km/hr
(13) A train takes 4 hours to travel from Town A to Town B at a speed of 120 km/hr. If the train’s speed is increased by 20 km/hr, how long will it take to cover the same distance?
- (a) 2 hours
- (b) 2.5 hours
- (c) 3 hours
- (d) 3.5 hours
(14) A rectangular pool is 25 meters long and 12 meters wide. If a person swims across the pool at a uniform speed of 2 meters per second, how long will it take to swim from one end to the other along the length?
- (a) 12.5 seconds
- (b) 15 seconds
- (c) 20 seconds
- (d) 25 seconds
(15) If a sum of money becomes 3 times in 5 years at a certain rate of simple interest, what is the rate of interest per annum?
- (a) 8%
- (b) 12%
- (c) 20%
- (d) 25%
Time and Distance
Problems on Trains
Percentage
Problems on Average
Calender
Simple Interest
True Discounts
