Akash regularly makes a round trip up and down a river to meet his friend Rashmi. Today, his speed downstream is half his usual downstream speed while his speed upstream is double his usual upstream speed. If his usual speed in still water is 12 kmph and the usual stream speed is 8 kmph, how many hours (approximately) is he going to spend on today’s round trip of 40 km?
Correct Answer : B
In a watch, the minute hand crosses the hour hand for the third time exactly after every 3 hrs 18 min 15 seconds of watch time. What is the time gained or lost by this watch in one day?
A and B run a 10 km race. In the first heat, A gives B a head start of 500 mts and beats him by 50 seconds. In the second heat,A gives B a head start of 80 seconds and is beaten by 1000 mts. What is the ratio of the speeds of A and B?
A man travelled a distance of 90Km in 9 hours partly on foot at 8 kmph and partly on bicycle at 17 kmph. Find the distance travelled on foot.