Pranav rows upstream a distance of 56km in 8 hours and rows downstream a distance of 75 km in 3 hours. How much time he will take to row a distance of 44.8 km in still water?

An examination was conducted for five subjects where the maximum marks for each subject was 100. Scored 82,97, 88 and 91 marks in 4 subjects respectively. If his total marks were 90 percent, then how many marks did he get in fifth subjects?

Given k = -3. Find the value of $$ {k^3+3k}$$. 

50 men took a dip in a water tank 40 m long and 20 m broad on a religious day. If the average displacement of water by a man is $$ {4 m^{3}}$$ , then the rise in the water level in the tank will be:

In an examination a student had to find 3/14 of a number, he found 3/4th by mistake, his answer was 150 more than the correct answer, find the required number.

A motorist and a scooterist made a journey of 120 km at the same time and from the same place. The graph shows the progress of the journey made by each person. Study the graph and answer the questions.

How far from the start, did the motorist meet the scooterist ? (in km ) 

If  $$\sqrt{2}=1.414$$, the value of $${ \sqrt{2}-1\over\sqrt{2}+1}$$  is nearest to 

Given that (a²+b²)=60, then find the value of (a+b)²+(a–b)².