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Question 14 Marks
The following chart gives the growth in height in terms of percentage of full height of boys and girls with their respective ages.
Age $($in years$)$ $8$ $9$ $10$ $11$ $12$ $13$ $14$ $15$ $16$ $17$ $18$
Boys $72\%$ $75\%$ $78\%$ $81\%$ $84\%$ $88\%$ $92\%$ $95\%$ $98\%$ $99\%$ $100\%$
Girls $77\%$ $81\%$ $84\%$ $88\%$ $91\%$ $95\%$ $98\%$ $99\%$ $99.5\%$ $100\%$ $100\%$
Draw the line graph of above data on the same sheet and answer the following questions.
$a.$ 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$)?$
Answer

$a.$ In $18 yr,$ the boys and in $17 yr,$ the girls achieve their maximum height.
$b.$ Boys grows faster the girls during puberty.
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