Marc has completed 60% of his science project. What fraction of his project has he NOT completed?
60% = 60/100 = 6/10 completed
10/10 - 6/10 = NOT completed
60%=60/100=(2*3*10)(2*5*10)=3/5
1-(3/5)=(5/5)-(3/5)=2/5
40%= 2/5 NOT completed
To find the fraction of Marc's project that he has not completed, we need to subtract the fraction he has completed (60%) from the whole project (100%).
First, let's represent 60% as a fraction. To convert a percentage to a fraction, divide it by 100. So, 60% as a fraction is 60/100 or 3/5.
Now, to find the fraction Marc has not completed, we subtract the fraction he has completed (3/5) from the whole project (1).
1 - 3/5 = 5/5 - 3/5 = 2/5
Therefore, Marc has not completed 2/5 of his science project.