Q.

Find the value of x under the given condition, 9+ 2=240+9x  is


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a

0.1

b

0.2

c

0.3

d

0.5 

answer is D.

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Detailed Solution

Given condition: 9+ 2=240+9x
 9x.92-9x=240
 9x81-1=240
 9x80=240
 9x=  240 80
 9x= 3
 32x=31
 32x= 31
2x = 1
 x=  1  2 =0.5
Hence, option (4) is correct.
 
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