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rachel used 12 cubes to make this 3-step staircase. if she uses a total of 42 cubes to make a similar staircase, how many steps will the staircase have ? think of usiing objects to solve this problem

Respuesta :

texaschic101
12 / 3 = 42 / x....12 cubes to 3 steps = 42 cubes to x steps
cross multiply
(12)(x) = (42)(3)
12x = 126
x = 126/12
x = 10.5 steps

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