Answer:
≈ 0.55 or ≈ [tex]\frac{11}{20}[/tex]
Step-by-step explanation:
[tex]\frac{16\frac{2}{3}-14\frac{1}{6}+1.3}{2.5*1.56*0.4}\\\\\\\frac{16.333-14.167+1.3}{2.5*1.56*0.4}\\\\\\\frac{0.866}{1.56}\\\\\\0.555128\\[/tex]
≈ 0.55 or ≈ [tex]\frac{11}{20}[/tex]