Question

Amit saves 400 in the first month, 500 in the second month, in the third month
600 and so on.
How much will be his total savings in 21 months?​

Answer 1

Step-by-step explanation:

a = 400 , d = 100

a21 = 400 + 2000

= 2400 in 21 months

hope this helps...

Answer 2

Answer:

Savings of three months=400+500+600=1500

Saving of one month=500

Savings of 21 months=500×21=10500

Step-by-step explanation:

Hence Rs10500 is the right answer