Salestopia purchases rebuilt engines for resale. Recently, it purchased engines from a wholesaler for $4,908 less 37%, 16% and 3%. Operating costs are 57% of the cost of the engine. Salestopia usually marks up the engines by 54% of the selling price. If the engines were to be sold at a break-even price, then determine the markdown percentage.

A) 28.98%
B) 27.78%
C) 26.67%
D) 16.54%
E) 6.13%

Three friends are starting a food truck and are contributing a total of $140,000 to begin operations.Their investments are in the ratio of 3:4:7.What is the difference in investment between the smallest investor and the largest investor?