n(A-B) denotes elements which are in A but not in B
n(Au B) denotes elements in A and B
n(AnB) denotes elements that are common in A and B
Now I will add one more set
n(B-A) which denotes elements in B but not in A
So, n(AuB) = n(A-B) + n( B-A) +n(AnB)
70 = 18 +n(B-A) + 25
70 = 43 + n(B-A)
n(B-A) = 70-43
n(B-A) = 27
So, n(B) = n( B-A) + n( AnB)
= 27+25
= 52
Answer:
24 customers bought 3+ items.
Step-by-step explanation:
80% of 150 = 120
39/120 bought 1 item
57/120 bought 2 items
39 + 57 = 96
120 - 96 = 24
24 customers bought 3+ items.
Hope this helps! :)
Answer:
Step-by-step explanation:
hello
so the solution is 2
so the solution is 4/5
hope this helps
6000 - 1800 = 4200
4200/4 = 1050
so she donated 25% to charity
