What is the value of the underlined digit? Write your answer as a fraction.
1 answer:
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<h2>Hello!</h2>
The answer is:
The correct option is:
A) Jeff, 4.5 hours; Julia 9 hours.
<h2>Why?</h2>To solve the problem, we need to write two equations using the given information.
So, writing the first equation we have:
We know that Jeff can weed the garden twice as fas as his sister Julia, so:
Also, from the statement we know that they can weed the garden in 3 hours, so, writing the second equation we have:
Then, we need to substitute the first equation into the second equation in order to isolate Julia's rate, so, solving we have:
We have that Julia could weed the garden by herself in 9 hours.
So, calculating how long will it take to Jeff, we have:
We have that Jeff could weed the same garden by himself in 4.5 hours.
Hence, the correct option is:
A) Jeff, 4.5 hours; Julia 9 hours.
Have a nice day!
Well... the two rectangles are in the picture below, those are their coordinates
so, you can pretty much see how long one side is, since you can simply count the units on the grid
running a tests on them.... hmmm they'd be similar is the length of the corresponding sides on each figure, give the same ratio
so, you can pretty much see how long one side is, since you can simply count the units on the grid
running a tests on them.... hmmm they'd be similar is the length of the corresponding sides on each figure, give the same ratio