Question

find time in which sumof 20000r compound annualy at10% per annum yields a compound interest of 4200r​

Answer 1

Answer:

P=20,000

R=10%

I=4,200

T=?

T=100×I/P×R

=100×4,200/20,000×10

=21/10

=2.1

=2year1month.