Answer:l
V
Step-by-step explanation:
5x15km/h=answer
Given
216 sections : 15%
want to know
X sections : 100%
Write the proportion equation
216/15 = X/100
Cross multiply
216*100=15*X
Solve for X
X=21600/15=1440
so there used to be 1440 sections.
Answer:
It's 1
Step-by-step explanation:
The time it takes them working together to paint the room is 3.08 hours
<h3>Rational expression</h3>
Rational expression are equation written as a ratio of two expressions or equations.
If Wes can paint a certain room in 8 hours, she can paint 1/8 of the room in 1 hr
Similarly, if Sally can paint the same room in 5 hours, , she can paint 1/5 of the room in 1 hr
Determine the time it takes them to paint the room altogether.
Time together = x
Using the expression below to determine the value of x
1/x = 1/8 + 1/5
1/x = 5+8/40
1/x = 13/40
x = 40/13
x = 3.08
Hence the time it takes them working together to paint the room is 3.08 hours
Learn more on rational expression here; brainly.com/question/2264785
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Well the first step is to divid 100 by 2 then you would get 50 the divid it by 5 and then you should get two so 2*5*2*5