Question

a sum of ₹6240 is paid off in 30 installments, such that each installment is ₹10 more than the preceding installments. calculate the value of the first instalment
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Answer 1

Step-by-step explanation:

s=6240

n = 30

d=10

it is an AP

6240=30/2(2a+(30-1)10)

6240/15=2a+290

a= (416-290)/2

=126 /2 = 63 is first installment

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