A man's wage was reduced by 20% and then increased by 20%. His loss percent is
In a shop 9 oranges cost as much as 5 apples, 5 apples cost as much as 3 mangoes, 3 mangoes cost as much as 12 lemons. If the cost of 12 lemons is Rs. 18, the cost of an orange is
A can do a piece of work in 3 days. B can do the same piece of work in 6 days. The number of days necessary to finish the same work if both of them do it together.
In a queue of students, A is 18th from front while B is 16th from the back, If C is 25th from the front and is exactly in the middle of A and B, the number of students in the queue:
Two glasses of equal volumes, one - half and the other three-fourth filled with milk. They are then filled to brim by adding water. Then the contents in the two glasses are poured into another vessel. The ratio of milk to water is:
The average monthly salary of twenty teachers in a school is Rs. 2,000. If the salary of the Headmaster is also added, the average monthly salary becomes Rs. 2,100. The salary of the Headmaster is: