Question

State True or False. The length and breadth of a rectangular field are in the ratio 4: 5. If the length is 20m, then the breadth of the field is 25m.

• A. True
• B. False

Answer 1

The correct option is A True

$Length\left(l\right):Breadth\left(b\right)=4:5$
$\Rightarrow \frac{l}{b}=\frac{4}{5}$
Given: $l=20m$
$\Rightarrow \frac{20}{b}=\frac{4}{5}$
$\Rightarrow \frac{b}{20}=\frac{5}{4}$
$\Rightarrow b=\frac{5\times 20}{4}$
$b=5\times 5=25$
$\therefore Breadthofthefield=25m$