BEFORE BEING SIMPLIFIED, THE INSTRUCTIONS FOR COMPUTING IMCOME TAX IN COUNTRY R WERE TO ADD 2 PERCENT OF ONE'S ANNUAL INCOME TO THE AVERAGE OF 100 UNITS OF COUNTRY R'S CURRENCY AND 1 PERCENT OF ONE'S ANNUAL INCOME, WHICH OF THE FOLLOWING REPRESENTS THE SIMPLIFIED FORMULA FOR COMPUTING THE INCOME TAX, IN COUNTRY R'S CURRENCY, FOR PRESON IN THAT COUNTRY WHOSE ANNUAL INCOME IS I ? 答案是:50+I/40 这题题干都读不懂,请高人指点。。。