Respuesta :
in 100 she can make 10 and in 70 she can make 7 so just add 10 and 7 to get the answer of 17
100 cubes + 70 cubes = 170 cubes.
170 cubes divided by 10 cubes per train is 17 cube trains.
170 cubes divided by 10 cubes per train is 17 cube trains.