Question

The perimeter of a rectangle is 96 ft. The ratio of its length to its width is 7 : 5. What are the dimensions of the rectangle?



A.


30 ft by 18 ft


B.


28 ft by 20 ft


C.


24 ft by 24 ft


D.


22 ft by 26 ft

Answer 1

@madhu.mukherjee.946 @hartnn

Answer 2

Perimeter of Rectangle P = 2 * ( l + b )

Let length, l = 7x and Breadth, b = 5x

P = 2 * ( l + b )

96 = 2 * ( 7x + 5x )

Solve for x.

Then Find length and breadth.

Answer 3

i'm getting C is that right?

Answer 4

Can you let me know how you got that answer?

Answer 5

7x+5x=12x*2=24

Answer 6

96 = 2 * ( 7x + 5x )

12x * 2 = 96

24x = 96

What is the value of x?

Answer 7

do you divide?

Answer 8

no you dont ok

Answer 9

i'm still confused on what to do next?

Answer 10

24x = 96

Divide both sides by 24.

What you get?

Answer 11

1 and 0.25

Answer 12

24x = 96

so, x = 96 / 24 = 4

we got the value of x = 4.

Now find length = 7x = 7 * 4 = 28
Breadth = 5x = 5* 4 = 20

Answer 13

ohhh ok it was B all along

Answer 14

yep :)