A grocery dealer cheats to the extent of 10% while buying as well as selling by using false weight. What is his actual gain % in whole process?
The value of \(cot{π\over 20}.cot{3π\over 20}.cot{5π\over 20}.cot{7π\over 20}.cot{9π\over 20}\) is
A coconut merchant finds that the cost price of 2750 coconuts is the same as the selling price of 2500 coconuts. His loss or gain percent is
What sum will give Rs 244/- as the difference between simple interest and compound interest at 10% pa in 1½ years compounded half-yearly?
A is 40% more efficient than B. If B finishes a work in 14 days , then in how many days will A finish the same work?