If Rs40000 amounts to Rs46305 in 1 1/2 years, compound interest payable

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1

If Rs40000 amounts to Rs46305 in 1 1/2 years, compound interest payable half yearly, find the rate of interest per annum.

2

A=46305
P=40000
T=3/2 years
the formula for compound interest half yearly is image
sub and find R