A house costs 36% more today than when it built.if the cost of the house today is $333200,find its cost when it was built
1 answer:
Answer:
The cost of house was $245000 when it was built.
Step-by-step explanation:
Given that:
Cost of the house today = $333200
Percent increase in today's price = 36%
Let,
x be the cost of house when it was built.
100 be the percentage when the house was built.
Percentage of house price today = (100+36)% = 136%
136% of x = 333200
Dividing both sides by 1.36
Hence,
The cost of house was $245000 when it was built.
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Answer:
x=-1 and y=-5
Step-by-step explanation:
ሰላም!
Given expressions let them given as two equations
- y=2+7x....... equation (1)
- -2x+6y=-28..... equation (2)
Thus, substitute y=2+7x into equation (2)
simplify it
subtract 12 from both sides
divide both sides by 40
Therefore, as we get the value of x=-1 substitute it to equation (1) and solve for variable y
To be more sure make a cross check on both of the two expressions
Thus,
1) y=2+7x .... substitute y=-5 and x=-1 and check if it is equal
-5=2+7(-1)
-5=2-5
-5=-5
2)-2x+6y=-28... substitute and check
-2(-1)+6(-5)=-28
2-30=-28... (-a)(-b)=ab
-28=-28
Hope it helps!