Question 74iThe following chart gives the growth in height in terms of percentage of full height of boys and girls with their respective ages- - - 8 9 10 11 12 13 14 15 16 17 18- - - 72 75 78 81 84 88 92 95 98 99 100- - - 77 81 84 88 91 95 98 99 99-5 100 100- -Draw the line graph of above data on the same sheet and answer the following questions-In which year both the boys and the girls achieve their maximum height-

Boys achieve their maximum height at the age of 18 and girls nbsp;achieve their maximum height at the age of 17. ...

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Standard VIII

Mathematics

Application of Graphs

Question 74iT...

Question

Question 74(i)
The following chart gives the growth in height in terms of percentage of full height of boys and girls with their respective ages.
$\begin{matrix} A g e (i n Y e a r s) & 8 & 9 & 10 & 11 & 12 & 13 & 14 & 15 & 16 & 17 & 18 B o y s (i n p e r c e n t a g e) & 72 & 75 & 78 & 81 & 84 & 88 & 92 & 95 & 98 & 99 & 100 G i r l s (i n p e r c e n t a g e) & 77 & 81 & 84 & 88 & 91 & 95 & 98 & 99 & 99.5 & 100 & 100 \end{matrix}$
Draw the line graph of above data on the same sheet and answer the following questions.
In which year both the boys and the girls achieve their maximum height?

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Solution

Boys achieve their maximum height at the age of 18 and girls achieve their maximum height at the age of 17.

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Similar questions

Q. Question 74(ii)
The following chart gives the growth in height in terms of percentage of full height of boys and girls with their respective ages.

\begin{matrix} A g e (i n Y e a r s) & 8 & 9 & 10 & 11 & 12 & 13 & 14 & 15 & 16 & 17 & 18 B o y s (i n p e r c e n t a g e) & 72 & 75 & 78 & 81 & 84 & 88 & 92 & 95 & 98 & 99 & 100 G i r l s (i n p e r c e n t a g e) & 77 & 81 & 84 & 88 & 91 & 95 & 98 & 99 & 99.5 & 100 & 100 \end{matrix}

Draw the line graph of above data on the same sheet and answer the following questions.
Who grows faster at puberty (14 years to 16 years of age)?

Q. Question 74(i)
The following chart gives the growth in height in terms of percentage of full height of boys and girls with their respective ages.

\begin{matrix} A g e (i n Y e a r s) & 8 & 9 & 10 & 11 & 12 & 13 & 14 & 15 & 16 & 17 & 18 B o y s (i n p e r c e n t a g e) & 72 & 75 & 78 & 81 & 84 & 88 & 92 & 95 & 98 & 99 & 100 G i r l s (i n p e r c e n t a g e) & 77 & 81 & 84 & 88 & 91 & 95 & 98 & 99 & 99.5 & 100 & 100 \end{matrix}

Draw the line graph of above data on the same sheet and answer the following questions.
In which year both the boys and the girls achieve their maximum height?

Q. The table below shows the data on approximate heights of boys and girls as they grow in age. Draw graphs showing height and age for both boys and girls on the same graph paper. What conclusions can be drawn from these graphs? [5 MARKS]

Q. Question 25
Observe the chart and graph given in Fig. 10.3 carefully and answer the following questions.

(a) Which of the line represents the height of boys?
(b) Which line represents the height of girls?
(c) What is the difference between the pattern of increase in the height of boys and girls?
(d) Is this pattern true for each individual?

The table below shows the data on likely heights of boys and girls as they grow in age. Draw graphs showing height and age for both boys and girls on the same graph paper. What conclusions can be drawn from these graphs?

Age (Years)	Height (cm)
Age (Years)	Boys Girls
0	53	53
4	96	92
8	114	110
12	129	133
16	150	150
20	173	165

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