Fruits 7

Bianca bought 3 1/4 kilograms of fruits. This morning, her brother used 1 3/4 kilograms of the fruits for a shake. How many kilograms of fruits were left?

Correct answer:

x =  1 ¹⁄₂ = 3/2

Step-by-step explanation:

$$\begin{gathered} a=3\frac{1}{4}=3+\frac{1}{4}=\frac{3\cdot 4+1}{4}=\frac{12+1}{4}=\frac{13}{4}=3\frac{1}{4}=3.25\text{kg} \\ b=1\frac{3}{4}=1+\frac{3}{4}=\frac{1\cdot 4+3}{4}=\frac{4+3}{4}=\frac{7}{4}=1\frac{3}{4}=1.75\text{kg} \\ x=a-b=\frac{13}{4}-\frac{7}{4}=\frac{13-7}{4}=\frac{6}{4}=\frac{3}{2}=1\frac{1}{2}=1.5 \end{gathered}$$

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