Answer :
To determine how many kilograms of the compound will be used over 12 weeks, we can follow these steps:
1. Calculate the total grams used per week:
Since the laboratory uses 75 grams of the compound every day and there are 7 days in a week, you can calculate the weekly usage as follows:
[tex]\[
75 \text{ grams/day} \times 7 \text{ days/week} = 525 \text{ grams/week}
\][/tex]
2. Calculate the total grams used over 12 weeks:
Multiply the weekly usage by the number of weeks to get the total usage over 12 weeks:
[tex]\[
525 \text{ grams/week} \times 12 \text{ weeks} = 6300 \text{ grams}
\][/tex]
3. Convert grams to kilograms:
Since 1 kilogram equals 1000 grams, you convert grams to kilograms by dividing by 1000:
[tex]\[
\frac{6300 \text{ grams}}{1000} = 6.3 \text{ kilograms}
\][/tex]
Therefore, the laboratory will use 6.3 kilograms of the compound over 12 weeks. The correct answer is A. 6.3.
1. Calculate the total grams used per week:
Since the laboratory uses 75 grams of the compound every day and there are 7 days in a week, you can calculate the weekly usage as follows:
[tex]\[
75 \text{ grams/day} \times 7 \text{ days/week} = 525 \text{ grams/week}
\][/tex]
2. Calculate the total grams used over 12 weeks:
Multiply the weekly usage by the number of weeks to get the total usage over 12 weeks:
[tex]\[
525 \text{ grams/week} \times 12 \text{ weeks} = 6300 \text{ grams}
\][/tex]
3. Convert grams to kilograms:
Since 1 kilogram equals 1000 grams, you convert grams to kilograms by dividing by 1000:
[tex]\[
\frac{6300 \text{ grams}}{1000} = 6.3 \text{ kilograms}
\][/tex]
Therefore, the laboratory will use 6.3 kilograms of the compound over 12 weeks. The correct answer is A. 6.3.