For the following questions answer them individually
A, B and C are assigned to complete a work. If the ratio of time taken by A, B and C is 4 : 3 : 6. Find the ratio of their efficiency.
The average of 5 numbers is 48. The average of the two numbers is 40 while the average of the other two is 58. Find the value of the remaining number.
Find the area of the triangle whose height is 56 cm and the corresponding base is 1/4th of the height.
The ratio of sand to stone in a mixture is 5 : 8 while that between stone and cement is 32 : 35. What is the ratio of sand to cement in the mixture?
The table given below shows the number of male and female in different states.
J1= The value of average number of males in A and B.
J2= The value of average number of females in E and F.
What is the value of (J2 - J1)?
A vendor bought 12 oranges for Rs. 50 and sold them at 12 for Rs. 30. Find the loss percentage.
What is the value of $$\frac{\left(\frac{28}{9} \times \frac{42}{35}\right) \div \left(\frac{3}{25} \times \frac{5}{7} \div \frac{1}{21}\right)}{\left(\frac{14}{15} \div \frac{2}{75} \ of \ \frac{7}{5}\right) \times \frac{1}{75} \div \frac{4}{3}}$$
A shopkeeper allows a discount of 20% on the marked price and still gains 12% on the whole. Find at what percent above the cost price did he mark his goods?