Question

Question 20 Ramkali saved Rs 5 in the first week of a year and then increased her weekly saving by Rs 1.75. If in the n th week, her week, her weekly savings become Rs 20.75, How much money will Ramkali have saved after 52 weeks

Answer 1

Step-by-step explanation:

Given that

a=5

d=1.75

a

n

=20.75

a

n

=a+(n−1)d

20.75=5+(n−1)1.75

15.75=(n−1)1.75

(n−1)=

1.75

15.75

=

175

1575

=

7

63

=9

∴n−1=9

∴n=10

Answered By Aashish

Answer 2

Answer:

refer to the attachment for the explanation