There are 14 floors in the building, because since Juan went up 4 floors, down 3 floors, and up one floor; so we know that he is 2 floors above from where he originally started. Once he went down 9 floors he passed the starting point and went to the bottom of the building. So, the middle must have been the 7th floor. Once I knew that I multiplied 7*2 and it got me 14. So in total there are 14 floors. I hope this helped ^^
You doubled the investment in the product. You sold it for twice what you bought it for. So it increased by $750
Answer: The answer is 
Step-by-step explanation: Given in the question and the figure a large rectangle consisting of 12 squares of equal areas. We need to choose the right expression for the purple shaded area.
Considering the rectangle in the figure horizontally, there are 4 rows of 3 squares. So, in the last row, the fraction of purple shaded square is
And if consider the figure vertically, then there are 3 columns of 4 squares.
Therefore, the final fraction represented by the purple shaded area is
Thus, the correct option is
Answer:390
Step-by-step explanation:
130% of a=507
130/100 x a=507
13/10 x a=507
13a/10=507
Cross multiplying we get
13a=507x10
13a=5070
Divide both sides by 13
13a ➗ 13=5070 ➗ 13
a=390
