Performance taskalberto's fish tankalberto gets a fish-tank kit for his birthday. the kit comeswiha 15-gallon tank, bags of colored gravel, and water-cleaningdrops. use this information to answer questions 1-4. show yourwork. write all answers in simplest form.1. the chart below shows how much of each color of gravelalberto puts in the bottom of his fish tank. colorblackgravel(pounds)a. how many pounds of gravel does alberto put in the tank?