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?

6 carpenters make 96 windows in 16 days. If 8 carpenters work for 4 days how many windows will they make?

Simplify : $$ {9\over 13} ÷{18\over 26}÷{90\over 52}$$

One angle of a triangle is 55°. If the other two angles are in the ratio 9:16, find the angles?

The sum of the digits of a 2 digit number is 9. When 27 is added to the number, the digits get interchanged. Find the number.

Solve it $$ {sin \ θ\over 1+cos\ θ}+{1+cosθ\over sin\ θ}=?$$

X, Y and Z take 18 days to complete a piece of work. If X works alone he finishes the work in 36 days and if Y works alone he finishes it in 60 days. How long will it take Z to complete the work alone?

If cos θ + sin θ =m, sec θ + cosec θ =n, what is m/n?