Josie took a long multiple-choice , vocabulary test. The ratio of the number of problem Josie got incorrect to the number of problem she got correct is 2 : 9.
b.) If Josie missed 20 questions. How many did she get right ?
Josie took a long multiple-choice , vocabulary test. The ratio of the number of problem Josie got incorrect to the number of problem she got correct is 2 : 9.
b.) If Josie missed 20 questions. How many did she get right ?