Peter 2

Peter wanted to have 120 kilogram of fruits.  He picked 10 bags .  each bags contains 9 1/2 kilograms. How many kilograms he need more?

Correct answer:

x =  25 kg

Step-by-step explanation:

$$\begin{gathered} m=9{\displaystyle \frac{1}{2}}=9+{\displaystyle \frac{1}{2}}={\displaystyle \frac{9\cdot 2+1}{2}}={\displaystyle \frac{19}{2}}=9.5\text{ kg } \\ x=120-10\cdot m=120-10\cdot 9.5=25\text{ kg} \end{gathered}$$

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