parhamdarvishi parhamdarvishi

12-04-2018
Mathematics

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Find two numbers if their sum is 6.1 and their difference is 1.6

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mathmate mathmate

16-04-2018

Sum and difference problem
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We are given both the sum and difference of two unknown numbers.
If
S=sum of the two numbers = 6.1
D=difference of the two numbers (larger minus the smaller) = 1.6
Then
larger number = (S+D)/2 = (6.1+1.6)/2 = 7.7/2 = 3.85
smaller number= (S-D)/2 = (6.1-1.6)/2 = 4.5/2 = 2.25

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