Two numbers are in the ratio 3 : 4. Their LCM is 84 . The greater number is: 

A boat goes 15 km in an hour in still water, and takes thrice the time to cover the same distance upstream. The speed of the current (in km / hr) is –

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?

If x - y = 6 and xy = 40, then  find $$ {x^2+y^2}$$

Six years ago, the ratio of ages of A to B was 7 : 5. After 4 years from now, the ratio of their ages will be 11 : 9. What is A’s age at present?

If a 7-digit number 54p3987 is divisible by 11 , then p is equal to:

Sanjay and Jacob start running in opposite directions from the same point at speeds of 7m/s and 5m/s. After 42 minutes, how far would they be from each other?

Direction : What value should come in the place of question mark (?) in the following questions?

23 × 45 ÷ 15=?