If two interior angles on the same side of a transversal intersecting two parallel lines are in the ratio 4:5, then find the greater of the two angles.

Pakeeza plants a rose on her 15^{th} birthday. If the plant has one rose to start with, and number of roses triples every week, then how many roses will be there after x weeks?

Ahmed rolls a cube in which the letters J, P, V, Q, H and W appear on faces 1, 2, 3, 4, 5, and 6, respectively. What is the fraction of symmetric letters (either horizontal or vertical) on the cube?

The simple interest on a certain sum for ^@6^@ years at ^@12\%^@ per annum is ^@Rs. 200^@ more than the simple interest on the same sum for ^@3^@ years at ^@13\%^@ per annum. Find the sum.