Question

Saket a student of class 10th saved rupees 200 during the first month from his pocket money , 225 in the second month and in this way he increases saving by rupees 25 every month .find how much time will his savings be Rupees 13325

Answer 1

the student saved 13325 in 533 months(44.41 years)

Answer 2

Answer:

Step-by-step explanation:

first month=Rs.200

second month=Rs.225

third month=Rs.250

D=25

a=200

an/last term=13325

A.P=200,225,250----------------------13325

a^n=a+(n-1)d

13325=200+(n-1)25

13325=200+25n-25

13325=175+25n

13325-175=25n

13150=25n

13150÷25=n

n=526

verification:-

a^n=a+(n-1)d

13325=200+(526-1)25

13325=200+13125

13325=13325

hence verified