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Mr. Toshio lent out 11 rulers at the beginning of class, collected 4 rulers in the middle of class, and gave out 7 at the end of class. He had 18 at the end of the day. How many rulers did he start with?

Respuesta :

lilme8p
Mr. Toshio had 32 rulers. 32-11 = 21 rulers. 21+4 = 25 rulers. and 25-7 = 18 rulers

Answer:

Mr. Toshio started with 32 rulers

Step-by-step explanation:

Let x be the number of rulers he start with

Mr. Toshio lent out 11 rulers at the beginning of class

Number of rulers - 11

[tex]x-11[/tex]

He  collected 4 rulers in the middle of class. So we add 4

[tex]x-11+4[/tex]

He gave out 7 at the end of class. So we subtract 7

[tex]x-11+4-7[/tex]

He had 18 at the end of the day.

[tex]x-11+4-7=18[/tex]

[tex]x-14=18[/tex]

Add 14 on both sides

[tex]x=32[/tex]

Mr. Toshio started with 32 rulers

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