Step-by-step explanation:
9.[tex]\tt{\dfrac{20}{25}×100 }[/tex]
[tex]\tt{\dfrac{20}{\cancel{25}}×\cancel{100} }[/tex]
[tex]\tt{80\% }[/tex]
80% students passed in test.
10.[tex]\tt{5\%=136\$ }[/tex]
[tex]\tt{ 1\%=\dfrac{136}{5} }[/tex]$
Total income=100% =[tex]\tt{\dfrac{136}{5}×100 }[/tex]
[tex]\tt{2720 }[/tex]$
Total earning=2720$
