Answer:
[tex]40[/tex]
Step-by-step explanation:
[tex]60 \div (6 \frac{1}{7} - \frac{1}{7}) \times 4 \\ \\ 60 \div ( \frac{43}{7} - \frac{1}{7} ) \times 4 \\ \\ 60 \div ( \frac{42}{7} ) \times 4 \\ \\ 60 \div 6 \times 4 \\ 10 \times 4 = 40[/tex]
