Question

If I save rd 5 on the first day and if the amount doubles every preceding day how much will i save in a week

Answer 1

Answer:

I will save rd 635

Step-by-step explanation:

a = 5

r = 2

n = 7

Sn = a ( r ^n - 1) / (r  - 1)

     = 5 * (2 ^7 - 1 ) / ( 2 -1)

     = 635