Question

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

• A. $25 \%$ and $20 \%$
• B. $20 \%$ and $25 \%$
• C. $50 \%$ and $100 \%$
• D. $25 \%$ and $50 \%$

Answer 1

Answer: (A)

Relative growth rate $=\frac{\text { Growth per unit time }}{\text { Intial size }} \times 100$