Now, the wording of this confused me a tad. I initially thought that some kids developed inflammation, and some developed fever, and they were exclusive of each other. Then the last sentence of the questions asks how many of the children developed inflammation, but not fever, indicating that they could indeed get both at the same time. So I figured:
i = kids with inflammation
f = kids with fever
b = kids with both inflammation and fever
Total kids = i + f - b + neither : the problem sets up the total # of kids, so
1000 = i + f - b + neither
(1) insufficient - we can't find i
1000 = i + f - b + 880
(2) insufficient - we still don't know f
1000 = 20 + f - b + neither
with (1) and (2) combined, we still have:
1000 = 20 + f - b + 880
and can't single out f.
Can anyone help me?
i = kids with inflammation
f = kids with fever
b = kids with both inflammation and fever
Total kids = i + f - b + neither : the problem sets up the total # of kids, so
1000 = i + f - b + neither
(1) insufficient - we can't find i
1000 = i + f - b + 880
(2) insufficient - we still don't know f
1000 = 20 + f - b + neither
with (1) and (2) combined, we still have:
1000 = 20 + f - b + 880
and can't single out f.
Can anyone help me?
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