A person drinks two 10-ounce mugs of percolated coffee and one 12-ounce cup of caffeinated soft drink every day. Based on the FDA caffeine graph (percolated coffee: ~40–170 mg per 5 oz; soft drinks: ~30–60 mg per 12 oz), approximately what is the minimum total daily caffeine intake in milligrams?

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GRE Quantitative Reasoning QUESTION #8167

Question 1

A person drinks two 10-ounce mugs of percolated coffee and one 12-ounce cup of caffeinated soft drink every day. Based on the FDA caffeine graph (percolated coffee: ~40–170 mg per 5 oz; soft drinks: ~30–60 mg per 12 oz), approximately what is the minimum total daily caffeine intake in milligrams?

$230$ mg
$190$ mg✔️
$140$ mg
$110$ mg

Correct Answer Explanation

To find the minimum caffeine, use the lowest end of each range.

Percolated coffee: Minimum is ~40 mg per 5-oz cup. A 10-oz mug is double: $40 \times 2 = 80$ mg per mug. Two mugs: $80 \times 2 = 160$ mg.

Caffeinated soft drink: Minimum is ~30 mg per 12-oz cup.

Total minimum: $160 + 30 = 190$ mg.

Answer: approximately 190 mg.

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