Question

X x 0,1 = 2/5

 

 

Answer 1

x*0,1=2/5

x=2/5:0,1

x=4

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Answer 2

X x \(\frac{1}{10}=\frac{2}{5}\)

X          =\(\frac{2}{5}:\frac{1}{10}\)

X          =\(\frac{2}{5}x\frac{10}{1}\)

x          =\(\frac{20}{5}\)

x          =\(\frac{4}{1}\)=4