Question

A small town surveys 250 adults, 180 of which are parents, about whether or not a park should be expanded. The results showed that 150 of the adults with children and 40 of those without thought the park should be expanded. Use this information to complete the two-way table below. Enter the correct values in the boxes.
                          yes      no
parents                      |
                                   |
not parents                |

Answer 1

250 adults and 180 of which are parents, so 250 -180 = 70 are not parents. The results showed that 150 of the adults with children and 40 of those without thought the park should be expanded. So there are 180 – 150 = 30 parents who answered no. and 70 – 40 = 30 not parents who answered no.    
                    yes | no
parents       150 | 30
not parents   40 | 30