Answer :
Find a common denominator between 75/100, 8/10, 17/20, 3/5. If you use a common denominator of 100, you’ll get: 75/100, 80/100, 85/100, 60/100. Now you can compare.
Sarah had got the greatest percentage of 85%. when Four friends each flipped a coin different numbers of times.
What is percentage?
Percentage is defined as to define any number in the reference of 100. or out of 100.
Here we have four friends flipped a coin:
Alice got heads 75% of the time.
[tex]\dfrac{75}{100}=0.75=0.75\times 100 =75\%[/tex]
Mary got heads 8 out of 10 times.
[tex]\dfrac{8}{10}=0.8=0.8\times 100=80\%[/tex]
Sarah got heads 17 out of 20 times.
[tex]\dfrac{17}{20}=0.85=0.85\times 100=85\%[/tex]
Ellen got heads 3 out of 5 times.
[tex]\dfrac{3}{5}=0.6=0.6\times 100=60\%[/tex]
Hence we can see that 85% is highest. so Sarah had got the greatest percentage of 85%.
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