Answer:
4 feet.
Step-by-step explanation:
Let x be the height of tower when finished.
We have been given that Priya takes a break when the tower is 2 and 1/2 feet tall, which is 5/8 of the height of the tower she wants to build.
This means that 5/8 of x equals 
. Let us represent this information in an equation.
Let us convert our given mixed fraction into improper fraction.
Let us multiply both sides of our equation by 8/5.
Therefore, the tower will be 4 feet tall when finished.
Answer:
Step-by-step explanation:
The new parking lot must hold twice as many cars as the previous parking lot. The previous parking lot could hold 56 cars. So this means the new parking lot must hold 2 x 56 = 112 cars
Let y represent the number of cars in each row, and x be the number of total rows in the parking lot. Since the number of cars in each row must be 6 less than the number of rows, we can write the equation as:
y = x - 6 (1)
The product of cars in each row and the number of rows will give the total number of cars. So we can write the equation as:
xy = 112 (2)
Using the above two equations, the civil engineer can find the number of rows he should include in the new parking lot.
Using the value of y from equation 1 to 2, we get:
x(x - 6) = 112 (3)
This equation is only in terms of x, i.e. the number of rows and can be directly solved to find the number of rows that must in new parking lot.
Answer:
15
Step-by-step explanation:
The average is the middle number: 75/5 = 15. That also happens to be the 3rd number.
_____
The integers are 13, 14, 15, 16, 17.
<u>Find cost of a ticket:</u>
40% = $5.00
1% = $5 ÷ 40 = 0.125
100% = 0.125 x 100 = $12.50
The cost of a ticket is $12.50
<u>Find 20% of two tickets:</u>
Two tickets cost $12.50 x 2 = $25
20% of $25 = 0.25 x $25 = $5
Answer: 20% of two tickets cost $5
