Susie is selling candy for a school fundraiser. She sells candy bars for $1.50 and packs of gum for $1.25. Her goal is to raise $200. If she has 150 pieces of candy, how many packs of gum will she need to sell?

100 packs of gum

We take the gum that she have is X

we have the equation X x 1.25+ (150-X) x 1.5=200

=> x =100

answer: the common difference is -0.10

no because after the troops were pulled many blacks were killed by hangings lynchings and other cruel ways which in a way interrupted the reconstruction of the south and differed from the way abraham lincoln had an idea of reconstruction