**Guide :High School **

# Michael had 18 problems wrong on his test.His score is 64% correct.How many problems were on the test

Michael had 18 problems wrong on his test.His score is 64% correct.How many problems were on the test**Basically all you need to do is to build correct proportion. Let the represent amount of problems solved correctly. Then: problems - problems - Now, let's find that amount:So, Michael had solved 17 problems right and 18 problems wrong. The total amount of problems on the test was 17 + 18 = 35.**...