Question
Solve:
(1) At a certain rate, the interest on Rs 5000 is Rs 1200 after 4 years. What will be the interest on Rs 15000 in the same time and at the same rate?
(2) The interest for 2 years on Rs 18,000 at a certain rate is Rs 3240. What will be the interest for the same time at the same rate on a principal of Rs 6000?