Question

What is the formula to calculate percentage?

Answer 1

HEY THERE...........
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☜☆☞ Percent just means "per = out of", "cent = 100". Therefore 10% = 10/100 = 1/10 = 0.1 and 250% = 250/100 = 2.5. Percentages are not limited to 100% as many children think. A loan shark might charge 10% per week. That's 0.1 times the amount owing and if not paid the amount owing becomes 1.1 times the previous amount owing (the previous amount plus 0.1 times that). If not paid for a year it would be 1.1*1.1*...*1.1 = 1.1^52 = 142.04 times the original amount borrowed, i.e. 142.04*100% = 14203% (*100% = *100/100). (I subtracted 1 because we want the interest not the total including the amount borrowed.) Even a small percentage per week can beome thousand of percent per year. For example 1% per week compounds to 1.6777 times = 167.77%, i.e. 166.77% interest (subtracting 1 again).

If you just remember that % means divided by 100 you should have no trouble. So 6% of 20 = 6/100 * 20 = 6/5 = 1.2. And 8 is what percentage of 40? Answer: 8/40 = 8/40 * 100% = 20%. Easy.

HOPE IT HELPS YOU........
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Answer 2

marks /total marks ×100