Question

The height of a plant is increasing at a rate of 3 centimeters every 2 days. At that rate, how many centimeters does the height increase by in 2 weeks? A. О 21 cm B.O 7 cm c. 42 cm D. 12 cm

Answer 1

`\begin{gathered} T\text{he rate of increasing the height of tree is }\frac{3\text{ cm}}{2\text{ days}} \\ \text{The number of days in a week is 7.} \\ So,\text{ total number of days in 2 weeks is 2}*7=14\text{ days} \\ \text{The increase in height of tree in 2 days is as follows:} \\ 14\text{ days}*\frac{3\text{ cm}}{2\text{ days}}=21\text{ cm} \end{gathered}`

Thus, the answer is 21 cm.