Question

There are 42 students in a class.

Each student walks to school or cycles to school or gets the bus to school.
There are 23 girls in the class.
10 of the girls walk to school.
6 of the boys cycle to school.
7 of the 11 students who get the bus to school are boys.
Find the number of these students who walk to school.
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Answer 1

Answer: the answer would be 16 kids walk to school (10 girls and 6 boys)

Explanation: