Mango fruit \(\text{RM }7\) /kg What is the price of 3 kg for the above mangoes??
METHOD 1
\(\begin{array} {rr} \space\space\text{RM }\space\space\space\space7 \\\times\space\space\space\space\space\space\space\space3 \\\hline\space2\space1 \\\hline \end{array}\)
METHOD 2
\(\begin{array} {rr} \text{RM }7+\text{RM }7+\text{RM }7=\text{RM }21 \end{array}\)
\(\begin{array} {rr} 3\times\text{RM }7=\text{RM }21 \end{array}\)
So, the price for 3 kg of mangoes is RM 21.
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