math
posted by kia .
Draw a venn diagram to illustrate the following. In a shop 50 cars were inspected and it found that 23 needed new brakes and 34 needed new tires. 3 needed no services at all how many needed new brakes and new tires? How many only needed brakes? Please help

label the intersection of the two circles as x
so the 23 includes the x and the 34 includes the x
equation:
50 = 23 + 34  x + 3
x = 10
so 10 needed both brakes and tires, so
13 needed only brakes
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