8 The amounts of oil pumped from an oil well in each of the years 2001 to 2004 formed a geometric progression with common ratio 0.9 . The amount pumped in 2001 was 100000 barrels.
- Calculate the amount pumped in 2004.
It is assumed that the amounts of oil pumped in future years will continue to follow the same geometric progression. Production from the well will stop at the end of the first year in which the amount pumped is less than 5000 barrels.
- Calculate in which year the amount pumped will fall below 5000 barrels.
- Calculate the total amount of oil pumped from the well from the year 2001 up to and including the final year of production.