Question -
Answer -
Given,
The first instalmentof the loan is Rs 100.
The second instalmentof the loan is Rs 105 and so on as the instalment increases by Rs 5 everymonth.
Thus, the amount thatthe man repays every month forms an A.P.
And the, A.P. is 100,105, 110, тАж
Where, firstterm,┬аa┬а= 100
Commondifference,┬аd┬а= 5
So, the 30th┬аtermin this A.P. will be
A30┬а=┬аa┬а+ (30 тАУ 1)d
= 100 + (29) (5)
= 100 + 145
= 245
Therefore, the amountto be paid in the 30th┬аinstalment will be Rs 245.