Given :
Amount of candy Jordan have , [tex]A=\dfrac{3}{8}\ pounds[/tex] .
Amount left after giving some to brother , [tex]a=\dfrac{1}{10}\ pounds[/tex] .
To Find :
How much did he give to his brother .
Solution :
Let , amount he gave to his brother is , b .
So ,
[tex]\text{Amount left = Total amount -Amount he give to his brother}\\\\a=A-b\\\\b=A-a\\\\b=\dfrac{3}{8}-\dfrac{1}{10}\\\\b=\dfrac{(3\times 10)-8}{80}\\\\b=\dfrac{22}{80}\\\\b=\dfrac{11}{40}[/tex]
So , amount he give to his brother is [tex]\dfrac{11}{40}[/tex] .
Hence , this is the required solution .