Tamara is reviewing recent orders at her deli to determine which meats she should order. She found that of 1,000 orders, 450 customers ordered turkey, 375 customers ordered ham, and 250 customers ordered neither turkey nor ham. Based on these data, how many of the next 1,000 customers will order both turkey and ham?
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Vocaloid (vocaloid):
first step: figure out how many students ordered both
let's draw a venn diagram
Vocaloid (vocaloid):
|dw:1462826053754:dw|
Vocaloid (vocaloid):
out of 1000 people, 250 ordered neither, so 750 people must fall somewhere within the circles
rebeccaxhawaii (rebeccaxhawaii):
|dw:1462826097416:dw|
Vocaloid (vocaloid):
nope
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rebeccaxhawaii (rebeccaxhawaii):
ugh
Vocaloid (vocaloid):
450 customers ordered turkey, 375 customers ordered ham
it doesn't say "ONLY turkey" or "ONLY ham"
rebeccaxhawaii (rebeccaxhawaii):
ohhh right right.
Vocaloid (vocaloid):
T + B = 450
H + B = 375
Vocaloid (vocaloid):
T + B + H = 750
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rebeccaxhawaii (rebeccaxhawaii):
yes
Vocaloid (vocaloid):
T + B = 450
H + B = 375
add these together we get
T + H + 2B = 825
Vocaloid (vocaloid):
T + H + 2B = 825
T + B + H = 750 [from earlier]
subtract these to get
B = 75
Vocaloid (vocaloid):
(made a typo)
rebeccaxhawaii (rebeccaxhawaii):
ohhhhhhhhhhhhhh myy gosshhhhhhhhhhhhh thats more simple than i thought.
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