Question

A man arranges to payoff a debt of Rs 4860 by 10 instalments which are in a.p. if he increase his instalments by Rs 24 annully find the value of his firs instalments

Answer 1

By sum formula
10/2(2a+9*24)=4860
5(2a+216)=4860
2a+216=972
2a=756
a=378

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Answer 2

Answer:

here's the answer

d=24, Sn=4860, n=10

formula used in this question is

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