Final answer:
To determine the amount of ground meat left for Friday, multiply the daily meat usage of 16.4 pounds by three and subtract from the starting amount of 68.75 pounds, resulting in 19.55 pounds remaining.
Step-by-step explanation:
The school cafeteria starts with 68.75 pounds of ground meat. On Monday, they used 16 2/5 pounds, which is equivalent to 16.4 pounds (since 2/5 is equal to 0.4 when converted to a decimal). If they use the same amount for the next three days, we must subtract this amount three times from the original amount.
To find out how much meat will be left for Friday, follow these steps:
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- Convert the mixed number 16 2/5 to an improper fraction or a decimal, which is 16.4 pounds.
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- Multiply 16.4 pounds by 3 (the number of additional days they will make hamburgers) to get the total meat used in three days.
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- Subtract the total meat used in three days from the starting amount of 68.75 pounds to find the remaining meat.
So step 2 would be: 16.4 pounds/day * 3 days = 49.2 pounds.
And step 3 would be: 68.75 pounds - 49.2 pounds = 19.55 pounds remaining for Friday.