Question

A man lent rs 2000 partly at 5% and balance at 4% if he recieves rs 92 towards annul interest,find the amount lent @5%.

Answer 1

1 2 0 0 ιf αмσυит ℓєит @ 5 % =χ , ѕσ @ 4 % = ( 2 0 0 0 -χ ) gινєи , χ * 5 / 1 0 0 + ( 2 0 0 0 -χ ) * 4 / 1 0 0 = 9 2 , σя 5χ + 8 0 0 0 - 4χ = 9 2 0 0 , χ = 1 2 0 0