Question

the length and breath of a playground is in ratio 4 is to 3.if it's perimeter is 280 find the cost of laying grass in it at the rate of rd 1.25

Answer 1

let the length be 4x and breadth be 3x
then perimeter= 4x +4x +3x +3x=14x=280
X=20
so the length=80 and the breadth= 60
area =80*60=4800
cost=4800*1.25