a ) ( 55 / 20 ) * $36 = $99
b) ( 75.6 / 36 ) * 20 = 42m^2
20m square of wallpaper cost $36.
A)Calculate the cost of 55m square of the same wallpaper.
b)What area of this wallpaper can you buy for $75.60?
3 answers
20 m^2 ---> $36
55 m^2 ---> $x
20/55 = 36/x
4/11 = 36/x
cross-multiply, 4x = 396
x = 99
so the 2nd part in the same way ....
let me know what you get
55 m^2 ---> $x
20/55 = 36/x
4/11 = 36/x
cross-multiply, 4x = 396
x = 99
so the 2nd part in the same way ....
let me know what you get
A. (36/20) * 55 = $99.
B. (36/20) * A = 75.60,
A = (20/36) * 75.60.
B. (36/20) * A = 75.60,
A = (20/36) * 75.60.
3 answers