A packaging machine produces $2400$ packages in $60$ minutes. How many packages will it produce in $45$ minutes?

2100

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1440

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2000

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1800

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Solution

The correct option is D $1800$
We need to calculate the unit rate of production.

Unit rate $= \frac{2400 packages}{60 min}$

$= \frac{2400}{60}$

$= 40$ packages per min

The machine produces $40$ packages per minute.

Hence, number of packages produced in $45$ min

$= 40 \times 45$

$= 1800$

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