02-06-2017
Mathematics

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I need helppp on this , I don't understand

I need helppp on this I dont understand class=

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mreijepatmat mreijepatmat

02-06-2017

Let x be the number of doors used in the one-story houses
And let y,be the number of doors used in the two-story houses

1) 3x +12y =117
2) 4x + 12y =124
Solve by substitution and you will find x = 7 and y =8 or
7 homes wit one story and 8 homes with 2 story

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Аноним Аноним

02-06-2017

Ok the answer is 21 Xd

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