Haley prepared 21 kilograms of dough after working 7 hours. How many hours did Haley work if she prepared 24 kilograms of dough? Solve using unit rates.
To solve this problem using unit rates, we need to find the rate at which Haley prepares dough in kilograms per hour.
First, we find the rate at which Haley prepares dough by dividing the amount of dough prepared (21 kilograms) by the number of hours worked (7 hours):
Rate = 21 kilograms / 7 hours = 3 kilograms/hour
Next, we use this rate to find the number of hours Haley works when preparing 24 kilograms of dough:
Number of hours = Amount of dough / Rate = 24 kilograms / 3 kilograms/hour = 8 hours
Therefore, Haley worked 8 hours when she prepared 24 kilograms of dough.