Question

If each month Rs.100 increases in any sum then find out the total sum after 10 months, if the sum of first month is Rs. 2,000

Answer 1

Step-by-step explanation:

It's an AP with common difference, d = 100

and a = 2000

then sum after 10 months, S10 = ( 10 / 2 ) [ 2 × 2000 + ( 10 - 1 ) 100]

= 5 [ 4000 + 900 ]

= 5 × 4900

= 24500 Rs.