1-4 할리데이 11판 솔루션 일반물리학

$$\begin{cases} 1 \ut{tuffet} &= 2\ut{pecks}\\ &=0.50\ut{Imperial~bushel}\\ 1\ut{Imperial~bushel}&=36.3687\ut{L} \end{cases}$$ $$5.60\ut{tuffet}=?$$ $$\ab{a}$$ $$\text{in} \ut{peck} ?$$ $$\begin{aligned} 5.60\ut{tuffet}&=5.60\ut{tuffet}\times\frac{2\ut{pecks}}{1 \ut{tuffet}}\\ &=11.2\ut{pecks} \end{aligned}$$ $$\ab{b}$$ $$\text{in} \ut{Imperial~bushel} ?$$ $$\begin{aligned} 5.60\ut{tuffet}&=5.60\ut{tuffet}\times\frac{0.50\ut{Imperial~bushel}}{1 \ut{tuffet}}\\ &=2.8\ut{Imperial~bushel} \end{aligned}$$ $$\ab{c}$$ $$\text{in} \ut{L} ?$$ $$\begin{aligned} 5.60\ut{tuffet}&=5.60\ut{tuffet}\times\frac{0.50\ut{Imperial~bushel}}{1 \ut{tuffet}}\times\frac{36.3687\ut{L}}{1\ut{Imperial~bushel}}\\ &=101.83236\ut{L}\\ &\approx{102\ut{L}} \end{aligned}$$