If today is Friday, then what will be the day after 129 days?

If a person goes 20 kilometre downstream in 5 hours and returns against the stream in 15 hours, then the speed of the stream in kilometre per hour is :

Five litres of water is added to a certain quantity of pure milk costing Rs. 60 per litre. If by selling the mixture at the same price as before, a profit of 20% is made, then the amount of pure milk in the mixture is :

A man rows 8 km upstream in 4 hours and 16 km downstream in 4 hours . What is the speed of the current?

Two pipes, A and B, can fill a cistern in 10 minutes and 12 minutes respectively. Pipe C can empty the cistern in 15 minutes. If all 3 pipes are opened together, how long will it take to fill the cistern completely?

In a 1000 m race P beats Q by 100 m and in the same race Q beats R by 200 m. By what distance does P beat R?

A boat takes 6 hr 25 minutes to row upstream a certain distance with a speed which is 14.4 times that of the river current. The time taken by the boat to row down the same distance with same speed is: