Answer:
He spent [tex]\frac{23}{40}[/tex] of his allowance
Step-by-step explanation:
The fraction Ebenezer spent on allowance is on Saturday is [tex]\frac{3}{8}[/tex]
The fraction he spent on Sunday is [tex]\frac{1}{5}[/tex]
The fraction of his allowance he spent is the fraction he spent on Saturday plus the fraction he spent on Sunday.
[tex]=\frac{3}{8}+\frac{1}{5}[/tex]
The LCD is
[tex]=\frac{3\times 5+8\times1}{40}[/tex]
[tex]=\frac{15+8}{40}[/tex]
[tex]=\frac{23}{40}[/tex]