Answer:
a) About 46.3 hours
b) About $1036.80
Step-by-step explanation:
a)
Break even means to make enough to cover her costs.
Given her cost is 1000, we need to find how many hours she will need to cover this up.
In 1 minute, she can type 90 words, that would pay her:
0.004 per word for 90 words = 0.004 * 90 = $0.36 per minute
Susan makes $0.36 per minute, so the amount of time (in minutes) it will take her to make $1000, is:
1000/0.36 = 2777.78 minutes
Converting that to hours, we divide by 60,
2777.78/60 = 46.3 hours
b)
4 hours per day for 3 days = 4 * 3 = 12 hours (per week)
Let there be 4 weeks in a month, so
12 hours per week * 4 = 48 hours per month
She will work 48 hours per month.
Given 90 words per minute, in 1 hour, she can type:
60 minutes * 90 = 5400 words per hour
In 48 hours, she can type:
5400 words per hour * 48 hours = 259,200 words
That would pay her:
0.004 per word for 259,200 words = 0.004 * 259,200 = $1036.80
