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What is the value of 15% of 800 + 25% of 400?
200
220
240
260
220
Convert percentages to fractions (15%=203тАЛ and 25%=41тАЛ) to calculate quickly in your head.
Percentage 1 = 15%, Base 1 = 800, Percentage 2 = 25%, Base 2 = 400
extPercentageofaNumber=100PercentageтАЛimesextBase
Convert percentages to fractions (15%=203тАЛ and 25%=41тАЛ) to calculate quickly in your head.
Forgetting to add the two separate percentage values together at the final step.
Calculate the first percentage
Find 15% of 800 by multiplying 800 by 10015тАЛ.
rac15100imes800=120
Calculate the second percentage
Find 25% of 400 by multiplying 400 by 10025тАЛ (or taking one-fourth of 400).
rac25100imes400=100
Add the two results
Sum the results obtained from both parts to find the final value.
120+100=220
B is correct because 15% of 800 is 120 and 25% of 400 is 100, and their sum equals 220.
Mastering percentage calculations is foundational for solving profit and loss, simple/compound interest, and data interpretation questions efficiently.
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