Question

A man agrees to repay a debt of RS.2500 in a no . of installment.Each installment exceeding the previous by RS.2 . If the first installment be of RS . 1.Find how many installment will be necessary to wipe out the loan completely​

Answer 1

Answer:2500

Step-by-step explanation:

Answer 2

Answer:

Sn= 2500 , d=2 , a=1

Sn= n/2[2a+(n-1)d]

2500= n/2[2*1+(n-1)2]

2500= n/2[2+2n-2]

2500*2= n[2+2n-2]

5000= 2n²

n²= 5000/2

n²= 2500

n= √2500

n= 50