Question

please tell me the answer ​

Answer 1

principal Rs 64000

compounded semi annually for 1and1/2 year

rate of interest10%per annum

compound interest CI=principal(1+rate/100)^time

64000(1+10/100)^3

64000*11/10*11/10*11/10

64*11*11*11

85184

so,compound interest is 85184

anita donated 10%of85184 to NGO

10%of85184 is 8518.4

left with 85184-8518.4

76665.6(ans)