A 400 m long train passes a railway platform in 20 seconds with speed 90 km/hr. What is the length of platform?

Arrange the simple interest of the following cases in decreasing order- (A) The simple interest on Rs 6600 at 5% per annum for 2 yrs. (B) The simple interest on Rs 200 at 6% per annum for 5 yrs. (C) The simple interest on Rs 840 at 5% per annum for 4 yrs. (D) The simple interest on Rs 5000 at 12% per annum for 2 yrs. Choose the correct answer from the options given below:

Ram can do a piece of work in 10 days and Anshu in 20 days. They work together but 2 days before the completion of the work, Ram leaves and Anshu completes the work. In total how many days was the work completed?

Consider the following frequency distribution. | Class | 0-10 | 10-20 | 20-30 | 30-40 | 40-50 | 50-60 | 60-70 | |---|---|---|---|---|---|---|---| | Frequency | 4 | 5 | 7 | 10 | 12 | 8 | 4 | Find the median of the distribution?

Ajeeta and Sanjeeta undertake a project for ₹ 48000. Further, it is known that Ajeeta can finish the project in 24 days and Sanjeeta can finish the project in 40 days while working alone. If the project gets completed in just 10 days when Ranjeeta also helped them in completing the project, then determine the amount that Ranjeeta would have received, if they distributed the amount in proportion to their respective working capability?

A man's wage was reduced by 50%. Again, the reduced wage was increased by 50%. Find his loss in terms of percentage: