Carpenter

You want to cut long board into smaller pieces. Carpenter said that one cut of the board into two pieces will cost you 70 cents. But you need to cut the board into 9 parts.

How much you pay?

Result

x =  560 cent

Solution:

x=(91)70=870=560 centx = (9-1)\cdot 70 = 8\cdot 70 =560 \ \text{cent}



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