Rebecca bought a desk for $70 she refinished it and sold it for a 20% profit? How much profit did she make? What price did she r
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Answer:
The proof is explained step-wise below :
Step-by-step explanation :
For better understanding of the solution see the attached figure :
Given : ABCD is a Parallelogram ⇒ AB ║ DC and AD ║ BC
Now, F lies on the extension of DC. So, AB ║ DF
To Prove : ΔABE is similar to ΔFCE
Proof :
Now, in ΔABE and ΔFCE
∠ABE = ∠FCE ( alternate angles are equal )
∠AEB = ∠FEC ( Vertically opposite angles )
So, by using AA postulate of similarity of triangles
ΔABE is similar to ΔFCE
Hence Proved.
For this case we propose a rule of three:
67 grams -----------> 22%
x grams --------------> 100%
Where:
The variable "x" represents the recommended amount of daily carbohydrates.
So, we have:
Rounding we have the recommended amount, in grams, of carbohydrates: 305 grams
Answer:
305 grams