Gia made two types of cookies using different amounts of sugar in each recipe. She used 2/3 cup of sugar in one recipe and 1/4 cup in the other. The question asks how much sugar she used total. Jose jogged 1/5 km, then rested, then jogged another 3/5 km. The question asks how many total kilometers he jogged. Mary studied for different fractions of hours over the weekend. She studied 2/8 hours on Friday, 3/8 hours on Saturday, and 1/4 hours on Sunday. The question asks how many total hours she studied over the weekend.