A 13 g piece of dark chocolate is found to contain 14 mg caffeine, while the caf

Question

A 13 g piece of dark chocolate is found to contain 14 mg caffeine, while the caffeine content in a 20-fluid-ounce mug of coffee might be 415 mg. How many pounds of chocolate would you have to eat to consume the amount of caffeine in 2 mugs of this particular coffee? (1 lb = 453.6 g)

A 13 g piece of dark chocolate is found to contain 14 mg caffeine, while the caffeine content in a 20-fluid-ounce mug of coffee might be 415 mg. How many pounds of chocolate would you have to eat to consume the amount of caffeine in 2 mugs of this particular coffee? (1 lb = 453.6 g)

Explanation / Answer

Caffeine content in 1 mug of coffee is 415 mg.

So, amount of caffein in 2 mugs of coffee is (415*2) mg = 830 mg

14 mg caffein comes from 13 g of dark chocolate

1 mg of caffein comes from 13/14 g of dark chocolate

830 mg of caffein comes from (13/14)*830 g = 770.7 g of dark chocolate

The amount is expressed in pound as

770.7 g = 770.7/453.6 lb = 1.70 lb

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