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Simplification - Quantitative Aptitude (MCQ) questions for Q. 74
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Simplification
Q. Given: b
2
= ac and a
x
=b
y
=c
z
.
Determine the value of y.
- Published on 12 Jun 15
a.
xz/(x+z)
b.
xz/2(z-x)
c.
2xz/(x+z)
d.
xz/2(x-z)
ANSWER: 2xz/(x+z)
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Discussion
MD SARFARAJ ALAM
-Posted on 12 Aug 20
a^x=b^x=c^x=k(assume)
using log
a=e^((logk)/x)
b=e^((logk)/y)
c=e^((logk)/z)
given b^2=ac(now here putting value of a,b,c)then taking again log both side and we got (2/y)=(1/x)+(1/z)
solving above equation we got y=2xz/(x+z)
➨
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