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How to solve the given angles?

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RupamPaul13
From the diagram. A=2B+30, Hence A will always be greater than B. Hence Option E

Step 1. Draw a line through O parallel to the two given lines.

Now for all the given three parallel lines, interior alternate angles are equal. This gives us the equation:

a=2b+30, so a>b.

For concepts download-> https://gmatclub.com/forum/gmat-math-bo ... l#p1073182

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Hi, can anyone offer an explanation how did we get a= 2b+30, like why "a" is equal to the sum of the other 2 angles
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Hi, can anyone offer an explanation how did we get a= 2b+30, like why "a" is equal to the sum of the other 2 angles

Interior alternate angles concept.

abhishek31

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