Fe metal sheet

For one product, 5/8 of the metal sheet are consumed, to the second 5/6 of remains. What part of the sheet metal is consumed for both products together?

Correct answer:

x =  15/16

Step-by-step explanation:

$$\begin{gathered} a=\frac{5}{8}=0.625 \\ b=\frac{5}{6}\cdot (1-a)=\frac{5}{6}\cdot (1-0.625)=\frac{5}{16}=0.3125 \\ x=a+b=0.625+0.3125=\frac{15}{16}=0.9375 \end{gathered}$$

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