Question

Rupees 10000 becomes rupees 20000 at simple interest in 8 years find the rate% per annum

Guys please tell fastt

Answer 1

Simple Interest = Amount - Principal

=Rs20000-Rs10000

=Rs10000

Principal = Rs 10000

Time = 8 years

Simple Interest = Rs10000

Rate = ?

S.I=P×R×T/100

Rs10000=Rs10000×R×8/100

Rs10000×100/Rs10000×8=R

100/8=R

12.5%=R

Hope it helps!!

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Answer 2

SI=P*R*T/100

SI=20000-10000

=10000

P=10000

T=8

R=?

R=10000*100/10000*8

R=100/8

R=12.5%