A construction worker is making concrete by mixing sand, gravel, and cement in water. For each pound of sand, he uses 1 2/3 poun
ds of gravel. For each pound of gravel, he uses 2/5 pound of cement. He is making enough concrete that he needs to use 3 pounds of sand. How many pounds of cement does he use? A. 1 pound
B. 1 4/15 pounds
C. 2 pounds
D. 2 1/15 pounds
