Question

At what rate present per annum simple interest will Rs.7500 become Rs.8400 in 2 years

Answer 1

Answer:

6%

Step-by-step explanation:

amount=8400

principle =7500

simple interest = a-p

=8400-7500

= 900rs

s.i= ptr/100

900= 7500×2×R

---------------

100

900×100

------------- = rate%

7500×2

Rate% = 6%

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Answer 2

Answer:

Rate of interest = 6%

Step-by-step explanation:

S.I.(simple interest) = PTR/100 (Just a formula dude;)

And rate of interest =  I*100/PT

P(principle) = Rs.7500

A(amount) = Rs.8400

T(time) = 2 yrs

I = Rs.8400 - Rs.7500 = Rs.900

R(rate of interest) = (900*100)/7500*2

                                = 900/(7500/100)*2

                                = 900/75*2

                                = 900/150

                                = 6

∴ rate of interest = 6%

I hope you understood:)