Question

answer please step bystep

Answer 1

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THE ANSWER IS HERE,

Sanika saves 10rupees on 1st day.

Again saves 11rupees on 2nd day.

And saves 12rupees on 3rd day.

So, These savings are in AP.

=> 10,11,12,............

There are 366days in 2016. Because it is a leap year.

So, a=10.

Common difference(d)=11-10 =1.

No. of terms(n) = 366.

The total savings on 31st Dec 2016 ,

$= > \: \frac{n}{2} (2a + (n - 1)d)$

$= > \: \frac{366}{2} (2(10) + 365(1))$

$= > \: 183(20 + 365)$

$= > \: 183(385)$

=> 70,455


:-)Hope it helps u.