140% of an amount is $28. What is 100% of the amount? (140% of what number is 28)

1. what is the measure of ∠abc? what is the measure of ∠abd?

Can someone me i’m confused. will give brainliest and a whole bunch of points

Girardo is using the model below to solve the equation . girardo uses the following steps: step 1 add 4 negative x-tiles to both sides step 2 add 1 negative unit tile to both sides step 3 the solution is which step could be adjusted so that gerardo's final step results in a positive x-value? in step 1, he should have added 4 positive x-tiles to both sides. in step 1, he should have added 3 negative x-tiles to both sides. in step 2, he should have added 4 negative unit tiles to both sides. in step 2, he should have added 1 positive unit tile to both sides.