Question

9000for 2years 4months at 10%per annum compunded annually

Answer 1

amount=p(1+r/100)^2
9000(1+10/100)^2
9000(1+1/10)^2
9000(11/10)^2
9000*11/10*11/10
90*121
10890=amount
now compound interest=amount-principal
10890-9000
1890
is the compound interest
hope it helps you