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Let's say I borrowed 100 rubles from a friend, went to the store, and lost them. Then I met a friend and borrowed 50 rubles from her, bought two chocolate bars for 10 rubles each, and had 30 rubles left. I gave those 30 rubles to my friend, and now I owe him 70 rubles and my friend 50 rubles, totaling 120 rubles. Plus, I have two chocolate bars worth 20 rubles.
That's a total of 140 rubles!
Where are the other 10 rubles?:smile50:
That's a total of 140 rubles!
Where are the other 10 rubles?:smile50:

