Question

2.Every month Sunita deposited a certain amount in the bank. In the first month
Rs.200, second month Rs.250, third month Rs.300 and so on. How much did she finally save by depositing in the bank at the end of 2 years?​

Answer 1

Answer:

18600Rs

Step-by-step explanation:

a(1) = 200

d= 250-200 = 50

n= 2×12 = 24

Saving in 2yr = S(24)

=> S(24) = (24/2) [ 2(200) + (24-1)(50)]

=> S(24) = (12) [400 + 23(50) ]

=> S(24) = (12)(1550)

=> S(24) = 18600