In a group of 22 boys, 13 play basketball and 15 play football. 3 of the boys play neither. how many play both ?
Steve what is b?
b is 10
To find out how many boys play both basketball and football, we need to use the principle of inclusion-exclusion.
Step 1: Add the number of boys who play basketball and the number of boys who play football: 13 + 15 = 28.
Step 2: Subtract the number of boys who play neither sport: 28 - 3 = 25.
Step 3: Since the total number of boys is 22, we need to adjust our count by removing the excess count above 22.
Step 4: Subtract the total number of boys (22) from the count obtained in step 2: 25 - 22 = 3.
Therefore, 3 boys play both basketball and football.
18 boys play something. If b play both, then
13+15-b = 18