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curt has 12 models in all. three of the models are airplanes. curt has 5 more model cars than boats . how many models of cars does curt have?

Respuesta :

jkonufe
Your answer is 7

Here is why:
12 - 3 is 9, if Curt has 5 more model cars than boats, then Curt has 2 boats and 7 model cars.

2 + 7 = 9
7 - 2 = 5
JeanaShupp

Answer: 7

Step-by-step explanation:

Given : Total number of models Curt has = 12

Curt has 5 more model cars than boats .

Number of models of car =3

Let x be the number of boats he has , then the number of models of cars he has will be x+5 .  (1 )

According to the question , we have

[tex]x+x+5+3=12\\\\\Rightarrow\ 2x+8=12[/tex]

Subtract 8 from both sides, we get

[tex]\\\\\Rightarrow\ 2x=4[/tex]

Divide both sides by 2, we get

[tex]x=2[/tex]

Now, the number of models of cars = 2+5=7      [From (1)]

Hence, Curt has 7 models of cars.