Question

The height of a particular plant is increasing at the rate of 5 mm per week. what would be height of the plant after 10 week if it's present height is 20 cm ? (assuming the growth of the plant is uniform)​

Answer 1

present height = 20cm

increase height every week = 5 mm

Therefore, after 10days plant height= days * increase height + present height

= 10 * 5mm + 20cm

= 50mm + 20cm

= 5cm + 20cm (10mm = 1cm)

= 25cm.

Answer 2

Answer:

The height of the plant after 10 weeks would be 25cm.

Step-by-step explanation:

Given that,

The height of a particular plant is increasing at the rate of 5 mm per week

$= > r=5mm/week$

The initial height of the plant is $h_{i}=20cm$

We are required to find the height of the plant after a time span of 10 weeks.

The growth of plant in a time of 10 weeks is $\triangle h=10\times r=10weeks\times5mm/week=50mm$

Now the final height is the sum of growth in height of the plant and the initial height of the plant.Therefore,we have

$h_{f}=h_{i}+\triangle h$

Substituting the known values in above relation,we get

$h_{f}=20cm+50mm=20cm+5cm=25cm$

Therefore,the height of the plant after 10 weeks would be 25cm.

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