a perso buys national savings certificate values exceeding of the last years purchase by ₨.100.after 12 year he finds that the total value of certificate purchased by him ₨.7,200. find the value of the certificate purchase by him (1) in the first year and (2) in the eighth year.
3 answers
clearly a geometric series. What do you know about them?
please sir
Surely by now you have some idea how to write the words in algebra. If last year's certificate was worth Rs a, then
ar = a + 100
ar^12 = 7200
Now go to work on that.
ar = a + 100
ar^12 = 7200
Now go to work on that.