maths

1.Peter deposited $10000 in a blank in 1996 and $9000 in 1997. The interest was compounded yearly at X% p.a., and the total amount he received in 1998 was $22000. Find X.

Suppose the population of a town grows by 2% each year and its population at the end of 1996 was 300000. At the end of which year will the population just exceed 330000?

Thanks!