Question

Rakesh saves some amount every month. If the first three months he saves 300, 350, 400 Rupees respectively. In which month will he save 2500 and how much will be his total saving?​

Answer 1

Answer:

Here , an AP is formed

300 ,350,400....

a=300

d=350-300=50

an= 2500

n=?

we will find n here

we know

an= a+ ( n-1) d

2500=300+(n-1) 50

2500=300+50n-50

2500-300+50=50n

2500-250=50n

2250=50n

2250/50=n

n = 45