Find the annual instalment that will discharge a debt of Rs. 17200 due in 4 years at 5% per annum simple interest. 4 वर्ष की अवधि में देय 5% वार्षिक साधारण ब्याज की दर पर 17200 रू. के ऋण के भुगतान के लिये वार्षिक किस्त क्या होगी?

Each instalment earns simple interest for the remaining years. If annual instalment is x, then: first instalment (paid now) has no interest, second earns interest for 1 year, third for 2 years, fourth for 3 years. Total = x(1) + x(1 + 0.05) + x(1 + 0.10) + x(1 + 0.15) = x(1 + 1.05 + 1.10 + 1.15) = 4.3x = 17200, so x = 4000. Option A gives Rs. 15080, option C gives Rs. 12900, both insufficient.