Ram and Shyam can complete a task in \(6{ 2\over 3}\)days and 15 days, respectively. They work together for 4 days, and then Ram leaves. In how many days after Ram leaves, will Shyam complete the remaining task alone?

Rs 8,000 amounts to Rs 9,159.20 in ‘t' months at 14% per annum interest being compounded half-yearly. What will be the amount (in ₹ nearest to an integer) in ‘t + 9' months on a sum of ₹ 10000 at 16% pa if the interest is compounded 9-monthly?

What is the difference between the compound interest on a sum of ₹10,000 at 12% p. a. for \(1{1\over4}\) years when the interest is compounded annually and when the interest is compounded 5-monthly? (nearest to a ₹)