Rates, SM-Bank 058 MC

A shop sells four sizes of chocolate bar.

Which packet costs the least per gram?

Packet 1
Packet 2
Packet 3
Packet 4

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\(B\)

Show Worked Solution

\(\text{Packet 1}\)	\(=\dfrac{288}{200} = 1.44\ \text{c/g}\)
\(\text{Packet 2}\)	\(=\dfrac{310}{220} = 1.41\ \text{c/g}\)
\(\text{Packet 3}\)	\(=\dfrac{181}{125} = 1.45\ \text{c/g}\)
\(\text{Packet 4}\)	\(=\dfrac{497}{350} = 1.42\ \text{c/g}\)

\(\therefore\ \text{Packet 2 costs the least per gram.}\)

\(\Rightarrow B\)