Question

o Three equal principles amount to 3720 after 3,4&5 years at simple interest 67.p.a. find the principal​

Answer 1

Let x be the principal amount. Then

(x+x*3*6/100)+(x+x*4*6/100)+(x+x*5*6/100)=3720

=> 3x+72x/100=3720

=> 372x/100=3720

=> x=1000

So the equal principals are Rs. 1000/-