Quantitative Aptitude - Arithmetic Ability Questions

If 10 people can do a job in 20 days,then 20 people with twice the efficiency can do the same job in

A store sells a watch for a profit of 25% of the cost. Then the percentage of profit against selling price is

If 4x - 5(2x - 1) > 2x + 3 > 2 - 3x; then x can take which of the following values?

Find the radius of the circle if the area of its sector is 30.8 sq cm whose corresponding central angle is 72°?

90% of X = 40% of Y and Y = a% of X. What is the value of a?

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

35 persons are engaged to complete a work in 60 days. After 32 days it is observed that only (2/5)th part of the work has been done. The number of persons to be engaged to complete the remaining work in the said period is

A solid cone of height 24 cm and radius of its base 8 cm is melted to form a solid cylinder of radius 6 cm and height 6 cm. In the whole process what
percent of material is wasted?