Quantitative Aptitude - Arithmetic Ability Questions

If 5 person together can make 5 mats in 5 hrs, then 10 person in 10 hours will make

A merchant marks the price of his articles 30% above the cost price. He gives some discount on it and earns a profit of 13.75%. What is the discount percentage?

A cone of radius 3.5 cm and height 27 cm is completely filled with water. This water is emptied into an empty cylindrical vessel of radius 2.1 cm. What will be the height of water in this vessel? (Take π = 22/7)

The number whose square is equal to the difference of the squares of 37 and 23 is:-

A box of sweets was distributed between A and B in the ratio 3 :4. If A got 36 sweets , what was the total no.of sweets

What is the remainder, when 4x4 +10x3-20x2+90 is divided by (x+2) ?

The average of 100 items was found to be 30 . If at the time of calculation , two items were wrongly taken as 32 and 12 instead of 23 and 11 , then the correct average is

If x + (1/x) = √13, then what is the value of x5 – (1/x5)?