Arithmetic Aptitudes Time and Work Question #4614
Single Choice Not Set

QA project that was expected to take 9 days was completed 3 days ahead of schedule after 10 additional workers were hired. How many workers were employed in total?

ID: #4614 Time and Work 204 views
Question Info
#4614Q ID
Not SetDifficulty
Time and WorkTopic

Choose the Best Option

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  • A 10
  • B 15
  • C 30
  • D 20
Correct Answer

Explanation

To solve this system of equations,
we can use algebraic methods.
Here's how you can solve for x in the given system of equations:
First, we start with the equation x * 9 = (x + 10) * 6.
We can simplify this equation by combining like terms on the right-hand side, which gives us
x * 9 = 6x + 60.
Now we can subtract 6x from both sides of the equation to get 3x = 60.
Dividing both sides of the equation by 3 gives us x = 20.
So, the solution to the system of equations is x = 20.

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