Answer :
Among Jack, Pandu and Sam, Pandu scored the best as his marks scored percentage is 60%.
What is percentage?
In mathematics, a percentage is a number or ratio that can be expressed as a fraction of 100. If you need to calculate the percentage of a number, divide the number by the whole number and multiply by 100. Percentages therefore mean 1 in 100. The word percent means around 100. Represented by the symbol '%'.
Solution according to the information given:
Jack's percentage = (5/10)×100
= 50%
Sam's percentage = (22/40)×100
= (11/20)×100
= 55%
Pandu's percentage = (12/20)×100
= 60%
Thus, Pandu scored the best marks by scoring 60%.
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