Q. 315.0( 1 Vote )

A man starts repaying a loan as first instalment of Rs. 100. If he increases the instalment by Rs.5 every month, what amount will he pay in the 30th instalment.



Answer :


Thus he pays Rs.100, Rs.105, Rs.100……

Now a = 100, d = 5

To find, T30

We know that

Tn = a + (n - 1)d

T30 = 100 + (30 - 1) × 5

     = 100 + 145

     = 245

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