Final answer:
Adrian can make a maximum of 14 bracelets in 5 hours.
Step-by-step explanation:
To find out how many bracelets Adrian can make in 5 hours, we first need to determine how long it takes to make one bracelet. It takes 1/10 hour to pick out materials and 1/4 hour to braid it together. So, the total time to make one bracelet is 1/10 + 1/4 = 2/20 + 5/20 = 7/20 hour.
Next, we divide 5 by 7/20 to find out how many bracelets Adrian can make. To divide by a fraction, we multiply by its reciprocal. So, 5 ÷ 7/20 = 5 × 20/7 = 100/7 ≈ 14.29 bracelets.