Quantitative Aptitude - Arithmetic Ability Questions

Selling price of a table is Rs 2808. If profit percentage is 17%, then what is the cost price (in Rs) of table?

Two cyclists P and Q cycle at 20 km/hr and 25 km/hr towards each other. What was the distance (in kms) between them when they started if they met after 56 minutes?

The average weight of 25 candles is 40 grams. If some candles of weight 50 grams each were removed, then average weight becomes 37.5 grams. How many candles of weight 50 grams each were removed? 

Two numbers are 50% and 80% lesser than a third number. By how much percent is the second number to be enhanced to make it equal to the first number?

What is the value of (32 cos6x – 48 cos4x + 18 cos2x – 1)/[4 sin x cos x sin (60 – x) cos (60 – x) sin (60 + x) cos (60 + x)]?

What is the value of (91 + 92 + 93 + ......... +140)?

If x + 1/x = √13, then 3x(x2-1) equal to

Find the odd one out.