What annual payment will discharge a debt of Rs. 6450 due in 4 years at 5% per annum?  Choose the correct choice from the following options:
A) 1500	B) 1400	C) 1700	D) 1800	E) 1600
Explanation :   he amount needs to be repaid in 4 years = Rs.6450   Suppose Rs.x is paid annually to repay this debt   Then, amount paid after 1st year = Rs.x   Interest for this Rs.x for the remaining 3 years = x × 5×3/100=15x/100   Then, amount paid after 2nd year = Rs.x   Interest for this Rs.x for the remaining 2 years = x × 5 × 2 /100=10x/100   1500mount paid after 3rd year = Rs.x   Interest for this Rs.x for the remaining 1 year = x × 5 ×1/100=5x/100   1500mount paid after 4th year = Rs.x and this closes the entire debt   =&gt;x+15x/100+x+10x/100+x+5x/100+x=6450   =&gt;4x+30x/100=6450   =&gt;4x+3x/10=6450   =&gt;40x+3x=64500   =&gt;43x=64500   =&gt;x=1500   1500nswer : Option 1500
<result>A</result>
What annual payment will discharge a debt of Rs. 6450 due in 4 years at 5% per annum?