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Convert the percentage into a decimal:
Set up a proportion using the hours Andrea worked, and the percentage compared to Carmen's workload:
The numerator will represent the hours worked, and the denominator will represent the percentage when compared to Carmen's workload.
Cross multiply the fractions:
Divide both sides by 0.45 to get x by itself:
Carmen worked 20.56 hours last week.
Set up a proportion using the hours Andrea worked, and the percentage compared to Carmen's workload:
The numerator will represent the hours worked, and the denominator will represent the percentage when compared to Carmen's workload.
Cross multiply the fractions:
Divide both sides by 0.45 to get x by itself:
Carmen worked 20.56 hours last week.
