Jasmine is reviewing recent orders at her deli to determine which meats she should order. She found that of 1,000 orders, 550 customers ordered turkey, 305 customers ordered ham, and 225 customers ordered neither turkey nor ham. Based on this data, how many of the next 1,000 customers will order both turkey and ham? Show your work, and use complete sentences.

help . i want to figure this out step by step. I don't get why the formula :
P(AUB)=P(A)-P(B)-P(A∩ B)

I've tried using this formula, but I just can't figure out how in the world it is used to find the answer in this prob

Question

Jasmine is reviewing recent orders at her deli to determine which meats she should order. She found that of 1,000 orders, 550 customers ordered turkey, 305 customers ordered ham, and 225 customers ordered neither turkey nor ham. Based on this data, how many of the next 1,000 customers will order both turkey and ham? Show your work, and use complete sentences. 

help . i want to figure this out step by step. I don't get why the formula : 
P(AUB)=P(A)-P(B)-P(A∩ B)

I've tried using this formula, but I just can't figure out how in the world it is used to find the answer in this prob

anonymous · Answer

The answer I get by using this formula does not concurr at all with the problem when i use this formula. But this problem is different from the problems that do work with this formula. The only difference is that instead of 'ordered neither turkey nor ham' which is what im stuck on) is usually 'ordered both turkey and ham'. But this isnt the case. :(

anonymous · Answer

@Awolflover1

anonymous · Answer

@malice  @SamsungFanBoy  @mathmale @Here_to_Help15

anonymous · Answer

@perl   @amistre64  @phi  @TheSmartOne

amistre64 · Answer

spose we have a universal set:  U = (a,b,c)

spose we have to sets with something in common

A = (a,b)
B = (b,c)

We know that A and B will give us U,  but if we count them, we get more than whats in U, why?

amistre64 · Answer

She found that of 1,000 orders, 

550 customers ordered turkey, 
305 customers ordered ham, 
225 customers ordered neither turkey nor ham. 

Based on this data, how many of the next 1,000 customers will order both turkey and ham?

does 550 + 305 + 225 = 1000?

amistre64 · Answer

and the formula you posted is wrong, just sayin

anonymous · Answer

really?

anonymous · Answer

no when i ad them all up it equals 1080

anonymous · Answer

add*

amistre64 · Answer

then we have had to have counted something more than once, that extra count is from what they have in common ....

anonymous · Answer

which would be 80 right? do i divide that by the 1000 in total?

anonymous · Answer

80 is equal to the 0.08% of 1000, right?

amistre64 · Answer

no, 1000 come in, and the information given us adds to 1080,  the 80 is the count of (ham and turkey)

so how many out of1000 customers, should we expect to order (ham and turkey) ?

anonymous · Answer

80 right?

amistre64 · Answer

yep

anonymous · Answer

ok thank you very much :)

amistre64 · Answer

youre welcome