Answer:
4) 40 pesos
5) 470 megabytes
6) x = 12 and y = 20
7) x = 6 and y = 8
Step-by-step explanation:
4 ) $3 = 1 peso
(3 x 40) = (1 x 40)
$120 = 40
5) 11 photos = 18.8 megabytes
(11 x 25) = (18.8 x 25)
275 photos = 170 megabytes
6) x/18 = 24/36 ---> 36x = 432 ----> x = 12
y/36 = 10/18 ---> 18y = 360 ----> y = 20
7) y/6 = 12/9 ---> 9y = 72 ---> y = 8
x/9 = 4/6 ---> 36 = 6x ---> 6 = x
