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What is the value of 15% of 800?
100
120
140
110
120
Calculate 10% of 800 (which is 80) and 5% of 800 (which is half of 10%, i.e., 40), then add them: 80 + 40 = 120.
We are given the percentage value 15% and the base value 800.
Value=(100PercentageтАЛ)├ЧBase
Calculate 10% of 800 (which is 80) and 5% of 800 (which is half of 10%, i.e., 40), then add them: 80 + 40 = 120.
Many students try to multiply 15 by 800 and forget to divide by 100, or they confuse 15% with 1.5%.
Identify given values
We need to find 15% of 800. Here, the percentage rate is 15 and the total base is 800.
Rate=15,Base=800
Apply the percentage formula
Substitute the values into the formula to express the percentage as a fraction of the total.
15%┬аof┬а800=10015тАЛ├Ч800
Perform the calculation
Simplify the fraction by dividing 800 by 100, which gives 8, then multiply by 15.
15├Ч8=120
B is correct because the calculated value of 15% of 800 is 120.
Understanding how to break down percentages into 10% and 5% increments is a universal skill useful for profit/loss, simple interest, and tax calculations in competitive exams.
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