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Maddie answered 28 problems correctly on a test. Each problem was worth the same amount. She earned an 80%. How many questions were on the test?Maddie answered 28 problems correctly on a test. Each problem was worth the same amount She earned an 80%. How many questions were on the test?



Answer :

Answer:

Step-by-step explanation:

28 problems are 80 percent of the exam

28  = .80 x       where 'x' is the number of exam questions

28 / .80 = x     35 questions on the exam  

Answer: 35 Questions

Step-by-step explanation:

Create a proportion to represent the problems and percentage with 80% = 0.80 and 100% = 1:

[tex]\frac{Correct}{Total} =\frac{28}{x}=\frac{.80}{1} \\28 = .8x\\/.8=/.8\\x = 35[/tex]