A leaf of 20 ; cm^{2} grows 5 ; cm^{2} per ho | vedclass

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Question

(A) The relative growth rate is calculated using the formula: $	ext{Relative growth rate} = \frac{	ext{Growth per unit time}}{	ext{Initial size}} \

Vedclass · Accepted Answer

$25 \%$ and $20 \%$

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(A) The relative growth rate is calculated using the formula: $	ext{Relative growth rate} = \frac{	ext{Growth per unit time}}{	ext{Initial size}} 	imes 100$.For leaf $A$:Initial size = $20 \; cm^{2}$,Growth = $5 \; cm^{2}/h$.Relative growth rate = $(5 / 20) 	imes 100 = 25 \%$.For leaf $B$:Initial size = $25 \; cm^{2}$,Growth = $5 \; cm^{2}/h$.Relative growth rate = $(5 / 25) 	imes 100 = 20 \%$.Thus,the relative growth rates for leaf $A$ and $B$ are $25 \%$ and $20 \%$ respectively.

$A$ leaf of $20 \; cm^{2}$ grows $5 \; cm^{2}$ per hour and a leaf of $25 \; cm^{2}$ grows $5 \; cm^{2}$ per hour. The relative growth rate of leaf $A$ and $B$ respectively is:

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