The following chart gives the growth in height in terms of percentage of full height of boys and girls with their respective ages.
Draw the line graph of above data on the same sheet and answer the following questions.
(a) In which year both the boys and the girls achieve their maximum height?
(b) Who grows faster at puberty (14 years to 16 years of age)?
Solution:
The graph representing the above data:
(a) By the age of 17 years girls reach their maximum height while boys reach their maximum height only by the age of 18years.
(b) Boys grow faster at puberty (14 years to 16 years of age). From 92% of height achievement at 14 years of age, the boys attain 98% of their height by 16 years of age. Girls on the other hand achieve 98% of their height by 14 years of age. By 16 years of age the girls have achieved 99.5% of their maximum height.
✦ Try This: The urban and rural Unemployment Rate of the country is given in the table below. Based on the data presented in the table plot a line graph and then answer the questions related to the graph
| Month & Year | Mar 21 | Apr 21 | May 21 | Jun 21 | Jul 21 | Aug 21 | Sep 21 | Oct 21 | Nov 21 | Jan 22 | Feb 22 |
| Urban Unemployement Rate (%) | 7.27% | 9.78% | 14.72% | 10.08% | 8.32% | 9.78% | 8.64% | 7.37% | 8.20% | 8.16% | 7.33% |
| Rural Unemployement Rate (%) | 6.15% | 7.13% | 10.55% | 8.75% | 6.43% | 7.64% | 6.04% | 7.91% | 6.41% | 5.84% | 8.34% |
The graph of the above table is given below:
(a) Which month recorded the highest unemployment rate in both urban and rural areas?
(b) In which month the difference between urban employment rate and rural unemployment rate was minimum?
(c) In which month was the rural unemployment rate more than the urban unemployment rate?
(a) The month of May 2021, recorded the highest unemployment rate in both urban and rural areas.
(b) The difference between urban unemployment rate and rural unemployment is minimum in October 2021.
(c) The rural unemployment was more than urban employment rate in the month of October 2021 and February 2022..
☛ Also Check: NCERT Solutions for Class 8 Maths Chapter 15
NCERT Exemplar Class 8 Maths Chapter 12 Problem 74
The following chart gives the growth in height in terms of percentage of full height of boys and girls with their respective ages. Draw the line graph of above data on the same sheet and answer the following questions. (a) In which year both the boys and the girls achieve their maximum height? (b) Who grows faster at puberty (14 years to 16 years of age)?
Summary:
The graph in the solution shows the attainment of height by girls and boys as a percentage of the maximum height achieved by them.
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