4,200 is deposited into a savings account that earns 4.5% simple Interest for 6 years

Which is a reasonable estimate of the amount of water in a small, inflatable pool used by children?

If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1).

If rs 900 amounts to rs 1044 in 4 years, what sum will amount to 1368 in 3 1/2 years at the same rate