Question

What will be the height of a plant after two years, if it grows at a rate of 5% every year and its present
height is 140 cm?​

Answer 1

Answer:

280 cm

Explanation:

in 1year plant grow 5 %, so 140×2 280

Answer 2

Given:

rate of growth every year = 5%

present height = 140cm

To find: the height of a plant after two years

Answer:

Since the growth of the said plant is 5%, the growth of the plant in 2 years would be twice the present growth of the plant.

the height of a plant after one year

                      = (rate of growth every year ×present height) + present height                      

                      = (5% × 140) + 140

                      = 7 +140

                      = 147

the height of a plant after two years

                                                 = 2 × the height of a plant after one year

                                                 = 2 × 147

                                                 = 294cm

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