Question

Mr Rakshit promises to pay interest to his friend when
he borrows 4,50,000 for running his business. The
business does well and Mr Rakshit pays his friend
31.50,000 as interest after one year. At what annual
rate of simple interest did he borrow money from his
friend?​

Answer 1

X-2=9x

-2=9x-x

-2=8x

X=-2/8

X=-1/4