Answer:
The answer is B.
Explanation:
The easiest way to solve these is by taking the total number/ 53 and subtracting it by the number you do know/ 23. In this case you would get 30. Then you multiply 5 to get 30. Which is 6.
6
5×+23= 53
5×+23-23= 53-23
5x=30
30÷5=6
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