On an average, the fat content in Cheddar cheese is:

If sin 28° = 15/17 , then tan 62° = ?

A man running at the speed of 6 kmph was over taken by the train moving with the speed of 78 kmph in 20 seconds. Find the length of train.

If x ²  – 15x + 51 = 0, then determine the value of (x – 5) + {1/(x – 5)}.

If x + 1/x = 3, find the value of x³ + 1/x³.

If (8x - 3y) = 196 and 7x:4y = 35:16, then find the value of (x² + 4y²).

A dishonest dealer claims to sell goods at cost price but uses a false weight of 900g instead of 1kg. What is his profit percentage?

If x + y = 4 and (1/x) + (1/y) = 24/7, then the value of (x³ + y³).