Ratio of times taken by A and B = 160 : 100 A can do the work in 12 days Let B can do the work in "D" days => 160:100 = 12 : D => D = 12 x 100/160 = 7.5 hrs
By adhering to the green building norms for its residential colonies, the Delhi metro Railway Corporation (DMRC) has become the world's first completely green metro.
The Indian Green Building Council (IGBC) awarded the Delhi metro the platinum rating for adhering to the green building norms for its 10 residential colonies.
Simple interest on a certain sum at 7% per annum for 4 years is Rs. 2415. What will be the compound interest on the same principal at 4% per annum in two years?