Question

The length of a rectangular plot is 1.5 times its breadth.20%of its perimeter is 20m.the area of the plot is- A)240m2 B)100m2 c)600m2 d)200 m2

Answer 1

Heya!

let the perimeter be x

20%of x = 20
1% of x = 20/20=1
100% of x = 1×100=100m

let the breadth be x
length =1.5x

perimeter = 2(length +breadth)

100m= 2 (1.5x+x)

100m = 5x
x= 20m

breadth = 20m
length = 1.5×20= 30m

area = length × breadth
area = 20×30m²= 600m²

ans: 600m²

Answer 2

Answer:

let the perimeter be x

20% of x = 20

1% of x = 20/20=1

100% of x = 1×100=100m

let the breadth be x

length =1.5x

perimeter = 2(length +breadth)

100m= 2 (1.5x+x)

100m = 5x

x= 20m

breadth = 20m length = 1.5×20= 30m

area = length × breadth area = 20×30m²= 600m²

ans: 600m²