Question

I am seriously having issues trying to figure out two of these simple answers....please help

Of 50 employees of a store located in downtown Boston, 18 people take the subway to work, 12 take the bus, and 7 take both the subway and the bus. How many employees
(a) Take the subway to the bus to work?
(b) Take only the bus to work?
(c) Take either the bus or the subway to work?
(d) Get to work by some other means?

I already figured that (b) = 12-7=5
I already figured that (c) = 11+5=16

I cannot get (a) and (d)....please help

Answer 1

for d, you want to start with the 50 employees, and subtract the 12 that take the bus, and the 18 that take the subway. That leaves you with 20. You might have over counted by this point though, since there is some overlap between the groups, so you add the 7 that take both the subway and bus. that puts you at 27, which is the answer to d.

Answer 2

i guess the answer to a would be the 50 people minus the 27 that dont ride anything, which is 23

Answer 3

the original answers I had for (a) was 40 and (d) 20, then (a) 30 and (d) 13 which were all wrong

Answer 4

So, 50 employees-18 bus-12 subway + 7 for both = 27? Now that looks right..how about (a)...any clue?

Answer 5

i think it would just be the 50 total minus the ones that dont ride anything (the answer to d), so 50 -27 = 23