Problem 5 : Let r="You raise revenue" t="You raise tax rates" 90%="You get 90%" A="You get A" First, write each statement symbolically, using +,-. Then determine which "If ..., then" statement is equivalent to the given one, i.e., choose the correct answer from the multiple choices of the "If ..., then ..." statements. Problem 5.1 : "You must get 90% in order to get an A." (5.1 - ) A) If you get 90%, then you will get an A. B) If you got an A, then you surely had 90%. . C) If you didn't get an A, then you didn't have 90% Problem 5.2: "To raise revenue, it is sufficient to raise taxes". (5.2 ) A) If you raised the revenue, then you must have raised the taxes. B) If you raise taxes, then you will raise the revenue. C) If you don't raise taxes, then you won't raise the revenue. Problem 5.3 : "To get an A it is enough to get 90%". (5.3 _-) A) If you don't get 90%, then you won't get an A. B) If you didn't get an A, then you didn't have 90%. C) If you got an A, then you surely had 90%. Problem 5.4: "We have to raise tax rates in order to raise revenue". (5.4