Question

the ratio of the length and the width of the floor of a building is 7:4. they differ by 45 ft. what's the floor area of the building?

Answer 1

let the length be 7x
so width = 4x
difference = 45
so 7x-4x=45
can u find x from here?

Answer 2

let l = w+45
thus l:w= w+45:w =7:4
Can you simplify this?

Answer 3

yep. thanks!

Answer 4

so what area did u get ?

Answer 5

.