If a farmer were to calculate the height of a plant in the 5th week by finding the average growth rate, how tall would the plant be?

13.3 cm

No worries! We‘ve got your back. Try BYJU‘S free classes today!

70 cm

No worries! We‘ve got your back. Try BYJU‘S free classes today!

63.3 cm

No worries! We‘ve got your back. Try BYJU‘S free classes today!

73.3 cm

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Open in App

Solution

The correct option is D 73.3 cm
To find the average growth rate, we calculate the height the plant has grown in consecutive weeks.

$G r o w t h f r o m w e e k 1 t o w e e k 2$

$= Height in week 2 - Height in week 1$
$= 40 c m - 20 c m$
$= 20 c m$

$G r o w t h f r o m w e e k 2 t o w e e k 3$

$= Height in week 3 - Height in week 2$
$= 50 c m - 40 c m$
$= 10 c m$

$G r o w t h f r o m w e e k 3 t o w e e k 4$

$= Height in week 4 - Height in week 3$
$= 60 c m - 50 c m$
$= 10 c m$

$A v e r a g e g r o w t h r a t e = \frac{10 + 10 + 20}{3} \approx 13.3 c m$

$H e i g h t i n w e e k 5$

$= Height in week 4 + Average growth rate$
$= 60 c m + 13.3 c m$
$= 73.3 c m$

Suggest Corrections

Similar questions

Q. For an experiment in Botany two different plants, plant A and plant B were grown under similar laboratory conditions. The heights were measured at the end of each week for

3

weeks. The results are shown by the following graph.
(a) How high was Plant A after (i)

2

weeks (ii)

3

weeks?
(b) How high was Plant B after (i)

2

weeks (ii)

3

weeks?
(c) How much did Plant A grow during the

3^{r d}

week?
(d) How much did Plant B grow from the end of the

2 n d

week to the end of the

3 r d

week?
(e) During which week did plant A grow most?
(f) During which week did plant B grow least?
(g) Were the two plants of the same height during any week shown here? Specify.

Q. For an experiment in botany, two different plants, plant A and plant B, were grown under similar laboratory conditions. Their heights were measured at the end of each week for three weeks. The results are shown by the line graph given below:

Study the above graph carefully and answer the questions given below:
(i) How high was plant A after (a) 2 weeks (b) 3 weeks?

(ii) How high was plant B after (a) 2 weeks (b) 3 weeks?

(iii) How much did plant A grow during the 3rd week?

(iv) How much did plant B grow from the end of the 2nd week to the end of the 3rd week?

(v) During which week did plant A grow most?

(vi) During which week did plant B grow least?

(vii) Were the two plants of the same height during any week shown here? Specify.

Q. John records the growth of a plant as a bar graph. If he were to calculate the height of the plant in the 5th week by finding the average growth rate, how tall would the plant be?

Week

Plant is 25 feet tall and plant B is 20 feet tall. Plant A grows2ft per week and plant B grows 2 1/5 feet per week. In how many weeks will the heights of the two plants be equal?

Plant A is 25 ft tall and plant B is 20 ft tall. Plant A grows 2 ft per week and Plant B grows 2 15ft per week. In how many weeks will the heights of the two plants become equal?

Join BYJU'S Learning Program