The boy

The boy scouts spent 10/12 hours doing their daily exercises. They only used 1/4 hour in hiking. How much time did they use for other body exercises?

Correct answer:

x =  7/12 h

Step-by-step explanation:

$$\begin{gathered} a=\frac{10}{12}=\frac{5}{6}\doteq 0.8333\text{h} \\ b=\frac{1}{4}=0.25\text{h} \\ x=a-b=\frac{5}{6}-\frac{1}{4}=\frac{10}{12}-\frac{3}{12}=\frac{10-3}{12}=\frac{7}{12}=\frac{7}{12}\text{h}=0.5833\text{h} \end{gathered}$$

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