A sum of money at simple interest amounts to Rs. 403 in 3 years at the rate of 10% per annum. What is the value of the sum?

Rs. 400  Rs. 380 Rs. 310 Rs. 345

Rs. 310

Principal (P) =100% Interest(I) = Rate(R) × Time(T) So, I = 10% × 3 = 30%    (for 3 years) A = P + I = 130% ATQ, 130% = 403 1% = \(\frac{403}{130}\) 100%=\(\frac{403}{130}\)×100 = 310 Rs.