3.1415926535 8979323846 2643383279 5028841971 6939937510 5820974944 5923078164 0628620899 8628034825 3421170679 x 373853253678.3
1 answer:
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Answer:
The student answered 18 problem correctly.
Step-by-step explanation:
We can find the number of problems answered correctly out of a test that had 30 problems by setting up equivalent fractions, or a proportion:
'x' is equal to the number of problems answered correctly. Since 60% is the number answered correctly and 100% is the total amount, we can compare 60% to 'x' and 100% to 30. In order to solve for 'x', we can cross-multiply and divide:
100x = (60)(3) or 100x = 180
Divide both sides by 100:
x = 18