Morgan is keeping track of her calcium intake from three sources for three days. The first day she had a glass of milk, a serving of cottage cheesem and 1 calcium supplement pill totaling 1090 mg of calcium. The second day she had 2 glasses of milk, 1 serving of cottage cheese, and 1 calcium supplement totaling 1450 mg of calcium. The third day she had 1 glass of milk, 2 servings of cottage cheese, and 1 calcium supplement totaling 1310 mg of calcium. Find the amount of calcium in each of the three sources.
A. 220 mg in the supplement
510 mg a serving of milk
360 mg in a serving of cottage cheese
B. 510 mg in the supplement
360 mg a serving of milk
220 mg in a serving of cottage cheese
C. 360 mg in the supplement
220 mg a serving of milk
510 mg in a serving of cottage cheese
D. 220 mg in the supplement
220 mg a serving of milk
220 mg in a serving of cottage cheese
E. none of these
Answer: B
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