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OpenStudy (anonymous):
A vitamin's expiration date has passed. It was supposed to contain 500 mg of Calcium, but it has lost 325 mg of Calcium. How many mg of Calcium are left? A. 135 mg B. 175 mg C. 185 mg D. 200 mg E. 220 mg
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OpenStudy (anonymous):
b
OpenStudy (cwrw238):
500 - 325
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