On December 20, 2023, Brent will stop offering office hours.
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Comment on Summarizing Information
i found the videos very
yeah, great effort and
Really good and easy to
Can you please explain how
Once we have two different
Once we have two different linear equations with 2 variables, we can solve that system for the two variables. In other words, we can find the exact values of B and G.
This is covered in these two videos:
- https://www.gmatprepnow.com/module/gmat-algebra-and-equation-solving/vid...
- https://www.gmatprepnow.com/module/gmat-algebra-and-equation-solving/vid...
Let's take the first statement where we have:
B = 2G
B + G = 27
Since B = 2G, we can take the second equation B + G = 27, and replace B with 2G.
We get: 2G + G = 27
Simplify: 3G = 27
Solve: G = 9
Once we know that G = 9, we can take one of our equations (e.g., B = 2G) and replace G with 9.
We get: B = 2(9) = 18
So, G = 9 and B = 18
In other words, there are 18 boys.
Does that help?
Cheers,
Brent
This helped a lot! Thank you
It makes sense now, thank you
Love how neat and concise the
Thanks for that!
Thanks for that!