Question

annual salary of 7000.
Ramkali saves 5 in the first week of a year and
then increased her weekly savings by 1.75.8
the nth week, her weekly savings become
20.75, then find the value of n.​

Answer 1

Answer:

a=5

d=1.75

$a_{n}$=a+(n-1)d

$a_{n}$=20.75

20.75=5+(n-1)1.75

20.75=5+1.75n-1.75

20.75=3.25+1.75n

1.75n=20.75-3.25

1.75n=17.5

n=10

PLEASE MARK THIS AS THE BRAINLIEST ANSWER