Question

The robber stole 280 dollars' worth of one-dollar bills. He also stole some 100-dollar bills, 50-dollar bills, and 20-dollar bills. Which expression could represent the amount of money that was stolen? A) 280(100x+50y+20z) B) 100x+50y+20z-280 C) 280x+170 D) 170x+280170x+280 E) 100x+50y+20z+280

Answer 1

E, because he is stealing everything, meaning he has a net profit. So, you would add everything. Since he 280 $1 bills, he just stole $280 which is a definite quantity, so we don't need a variable for it. Since everything else are indefinite quantities, we need variables (x, y, z). But, yeah, E should be the answer.