GIVE ME ANSWER

Hiii friends I have a question for you----->>

If I have 100 rs. And-

I spend=40 rs Remaining =60rs

I spend=30rs. Remaining =30rs

I spend=18rs. Remaining=12rs

I spend=12rs. Remaining=00rs

Total=100rs. Total=102rs

So friends can you let me know how it is possible????????😮