A) 38
B) 40
C) 60
D) 70
Correct Answer: A
Solution :
\[\Rightarrow \]\[0.3x+0.4=0.28x+1.16\] \[\Rightarrow \]\[0.3x-0.28x=1.16-0.40\] \[\Rightarrow \]\[0.02x=0.76\] \[\therefore \] \[x=\frac{0.76\times 100}{0.02\times 100}=38\]
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