单项选择题

If 120% of a is equal to 80% of b, which of the following is equal to a + b

A. 1.5a
B. 2a
C. 2.5a
D. 3a
E. 5a
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问答题
Judy plans to visit the National Gallery once each month in 2012 except in July and August when she plans to go three times each. A single admission costs $3.50, a pass valid for unlimited visits in any 3-month period can be purchased for $18, and an annual pass costs $60.00. What is the least amount, in dollars, that Judy can spend for her intended number of visits
单项选择题
If c is the product of a and b, which of the following is the quotient of a and b
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