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Sagot :
To determine which vitamins Robert met at least 75% of his recommended daily allowance (RDA) for, we need to calculate the total intake from his meal and compare it to his RDA.
First, let's calculate the total intake of each vitamin:
- Vitamin B12
- Salmon fillet: 5.87 μg
- Boiled green beans: 0.0 μg
- Strawberries, sliced: 0.0 μg
- Total intake: [tex]\(5.87 \, \mu g\)[/tex]
- Vitamin C
- Salmon fillet: 0.0 mg
- Boiled green beans: 12.1 mg
- Strawberries, sliced: 49.0 mg
- Total intake: [tex]\(12.1 + 49.0 = 61.1 \, mg\)[/tex]
- Vitamin E
- Salmon fillet: 0.60 mg
- Boiled green beans: 0.57 mg
- Strawberries, sliced: 0.42 mg
- Total intake: [tex]\(0.60 + 0.57 + 0.42 = 1.59 \, mg\)[/tex]
Next, we calculate the percentage of the RDA that these totals represent:
- Vitamin B12:
- Recommended: 2.4 μg
- Percentage: [tex]\(\frac{5.87}{2.4} \times 100 = 244.58\%\)[/tex]
- Vitamin C:
- Recommended: 75 mg
- Percentage: [tex]\(\frac{61.1}{75} \times 100 = 81.47\%\)[/tex]
- Vitamin E:
- Recommended: 15 mg
- Percentage: [tex]\(\frac{1.59}{15} \times 100 = 10.6\%\)[/tex]
Finally, we check if each vitamin meets at least 75% of the RDA:
- Vitamin B12: [tex]\(244.58\%\)[/tex] which is more than [tex]\(75\%\)[/tex]
- Vitamin C: [tex]\(81.47\%\)[/tex] which is more than [tex]\(75\%\)[/tex]
- Vitamin E: [tex]\(10.6\%\)[/tex] which is less than [tex]\(75\%\)[/tex]
Thus, Robert met at least 75% of his RDA for vitamin B12 and vitamin C only.
So, the correct answer is:
B. vitamin B12 and vitamin C only
First, let's calculate the total intake of each vitamin:
- Vitamin B12
- Salmon fillet: 5.87 μg
- Boiled green beans: 0.0 μg
- Strawberries, sliced: 0.0 μg
- Total intake: [tex]\(5.87 \, \mu g\)[/tex]
- Vitamin C
- Salmon fillet: 0.0 mg
- Boiled green beans: 12.1 mg
- Strawberries, sliced: 49.0 mg
- Total intake: [tex]\(12.1 + 49.0 = 61.1 \, mg\)[/tex]
- Vitamin E
- Salmon fillet: 0.60 mg
- Boiled green beans: 0.57 mg
- Strawberries, sliced: 0.42 mg
- Total intake: [tex]\(0.60 + 0.57 + 0.42 = 1.59 \, mg\)[/tex]
Next, we calculate the percentage of the RDA that these totals represent:
- Vitamin B12:
- Recommended: 2.4 μg
- Percentage: [tex]\(\frac{5.87}{2.4} \times 100 = 244.58\%\)[/tex]
- Vitamin C:
- Recommended: 75 mg
- Percentage: [tex]\(\frac{61.1}{75} \times 100 = 81.47\%\)[/tex]
- Vitamin E:
- Recommended: 15 mg
- Percentage: [tex]\(\frac{1.59}{15} \times 100 = 10.6\%\)[/tex]
Finally, we check if each vitamin meets at least 75% of the RDA:
- Vitamin B12: [tex]\(244.58\%\)[/tex] which is more than [tex]\(75\%\)[/tex]
- Vitamin C: [tex]\(81.47\%\)[/tex] which is more than [tex]\(75\%\)[/tex]
- Vitamin E: [tex]\(10.6\%\)[/tex] which is less than [tex]\(75\%\)[/tex]
Thus, Robert met at least 75% of his RDA for vitamin B12 and vitamin C only.
So, the correct answer is:
B. vitamin B12 and vitamin C only
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