Rates, SM-Bank 010 MC

A tram at the zoo does a complete 5 kilometre loop in 30 minutes.

If the tram travelled at the same speed, how long did it take to complete 2 kilometres?

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\(B\)

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\(30\ \text{minutes}/5\ \text{kms}\)	\(=\dfrac{30}{5}\ \text{minutes}/\dfrac{5}{5}\ \text{km}\)
	\(=6\ \text{minutes}/\text{km}\)

\(\therefore\ \text{Time for 2 kms}\)	\(=6\times 2\)
	\(=12\ \text{minutes}\)

\(\Rightarrow B\)