Mr toshio lent out 11 rulers at the begining of the class, collected 4 rulers in the middle of the class, and gave out 7 at the end of class. he had 18 at the end of the day. hiw many rulers did he start with

First Mr Toshio gave out 11 rulers. He then collected 4 in, so he had a net loss of 7 rulers at that time. He then gave out a further 7 rulers, so 14 rulers were given out at that point. If he had 18 rulers and 14 were given out, his total was 18 + 14. He had 32 rulers.

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