Marianne buys 16 bags of potting soil which come in 5/8 pound bags. This equals to 10 pounds of potting soil. Her father calls and says he needs 13 pounds of potting soil, how many additional bags should Marianne buy ?

Answer:5 bagsStep-by-step explanation:Given Marianne buys 16 bags of potting soil which come in 5/8 pound bagsThe above provides 10pounds of potting soil already Now her father says he needs 13 pounds So Marianne should get an extra of 13 - 10 =3 pounds of potting soilWe know that 1 bag contains 5/8 pounds of potting soilx bags contain 3 pounds of potting soil On cross multiplication we get [tex]\frac{5x}{8}=3[/tex]x = [tex]\frac{24}{5}[/tex] since x is an integer x = 5 bags  Note that an extra amount of soil will be remained unused