Andrew M. answered • 02/12/18
Tutor
New to Wyzant
Mathematics - Algebra a Specialty / F.I.T. Grad - B.S. w/Honors
Let x = number wearing both
68-x ='number wearing swimsuit only
39-x = number wearing sunglasses only
x + 68-x + 39-x = 80
-x + 107 = 80
-x = -27
x = 27 wearing both
68-x = 41 swimsuit only
39-x = 12 sunglasses only
The answer is 41 wore simsuits but not sunglasses
Andrew M.
You could put it here, and I'll take a look, but your best bet is to post it on the main site. If I don't see it, someone will work it out.
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03/02/18
Suzanne W.
Each person, in an IT department of 60 people, works on at least one of 3 major projects: system security, program implementation, platform development. 23 people work on system security, 28 work on program implementation, and 26 work on platform development. 7 people work on system security and platform development, 12 people work on program implementation and platform development, and 6 people work on all three projects. How may people work on system security and program implementation? (I've worked it down to SS + PI & SS =10 and PI + SS & PI=10) The answer is either 4, 5 or 6. I can see how it could each of the three, but I can't prove it to just one answer. THANK YOU This has me really stumped.
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03/02/18
Suzanne W.
03/01/18