How many 5-digit positive integers are there whose digits are even?
1 answer:
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Answer:
12 hours
Step-by-step explanation:
Let the number of hours Lily works each week be x.
This implies that of Olivia's is
x+4.
We were also told that for every two weeks, Olivia works a total of 32 hours.
This implies that
2(x+4)=32
We divide through by 2
We subtract 4 from both sides
Hence Lily works 12 hours each week.