Question

The length of a rectangular field is twice it's breadth.Meghna jogged around it 5 times and covered a distance of 3km. What is the length of the field

Answer 1

Let the breadth be x

So the rectangle =2x

Distance covered by meghna after jogging around the field 5 times =3km

Distance covered only by the 1st time round the field =(3÷5)km

So the perimeter of the field will (3÷5)km

Perimeter of the rectangle=2 (l+b)

=》3÷5=2 (2b+b)

=》3÷5=2×3b

=》3÷5=6b

=》b=1/10

Therefore the breadth =x=1/10km=100m

The length=2x=2×1/10km=200m

HOPE IT HELPS....