For the following questions answer them individually
If goods are purchased for Rs.600 and one fifth is sold at a loss of 20%, at what gain percent should the remainder be sold so as to gain 30% on the whole transaction?
Mohan and Ramesh together can do a piece of work in 6 days, and Mohan alone can do it in 10 days. In how many days can Ramesh alone do the same work?
If the length, breadth, and height of a cuboidal box are 24 cm, 16 cm, and 12 cm, respectively, then the volume of the box is:
The population of a village during the first year increases by 5% and during the second year it diminishes by 5%. At the end of the second year its population was 9975. What was the population at the beginning of the first year?
Vidhi gave Radha ₹8,000 on compound interest for 2 years at 5% per annum, compounding annually. How much loss would Vidhi have suffered had she given it to Radha for 2 years at 5% per annum on simple interest?
The average age of 30 men is 25 years. 5 new men of an average age of 30 years joined them. Find the average age of all the men put together.
The salary of an employee is first increased by 15% and then it is decreased by 25%. What is the percentage increase or decrease in his salary?
There are 50 students in a class. If the ratio of the number of boys to the girls is 16 : 9, then what is the mean proportional between the number of boys and girls in the school?
A car is travelling at a uniform speed of 51 km/h. The distance travelled by the car from 10:40 a.m. to 1:00 p.m. is:
At 46 km/h and 36 km/h, two trains of equal length are travelling in the same direction on parallel lines. What is the length of each train if the quicker train passes the slower train in 36 seconds?