Sick

Six seamstresses should make 60 shirts in five business days. After three days, two seamstresses were sick. How many days have the remaining seamstresses to finish the contract?

Correct answer:

t =  3

Step-by-step explanation:

$$\begin{gathered} a=60/(5\cdot 6)=2 \\ b=60-3\cdot 6\cdot a=60-3\cdot 6\cdot 2=24 \\ t=\frac{b}{a\cdot (6-2)}=\frac{24}{2\cdot (6-2)}=3 \end{gathered}$$

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