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CAT200095
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If $x^2 + y^2 = 0.1$ and $x – y = 0.2$, then $ x  +  y $ is equal to
0.3
0.4
0.2
0.6
cat2000
quantitativeaptitude
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Mar 29, 2016
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Quantitative Aptitude
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jothee
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0.4
answered
Aug 8, 2019
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Utkarsha Hajare
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Given,
x$^2$+y$^2$=0.1
x–y=0.2
x$^2$+y$^2$=0.1= (xy)$^2$2xy
0.1= 0.042xy
2xy=0.06
xy= – 0.03
Checking the options, x and y can be 0.1 and 0.3 respectively which adds up to 0.4
answered
Sep 4, 2019
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sakharam
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