Company K has an annual budget for a certain project, and ~$\frac{1}{5}$~ of this budget was spent during the first quarter of the year. If ~$\frac{1}{8}$~ of the remainder of the budget was spent during the second quarter, what fraction of the budget was left at the end of the second quarter?
~$\frac{7}{10}$~
~$\frac{31}{40}$~
~$\frac{27}{40}$~
~$\frac{3}{10}$~
~$\frac{91}{40}$~
(1) 1/5 spent
(2) 4/5*1/8=1/10
綜合 1-(1/5+1/10)=7/10
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