ASSIGNMENT
27. Art The bristles on a Chinese writing brush are 70% rabbit hair and 30% goat hair. What fraction of the bristles is goat hair?
A computer randomly generates an Integer from 1 to 10. Find the probability of the given event. Write your answer as a percent.
28. P(5) 29. P(4) 30. P(odd number) 31. P(even number) 32. P(factor of 20) 33. P(prime number)
34. Tests A multiple choice question on a test has 4 answer choices. You guess at the answer. What is the probability that you will select the correct choice? Write your answer as a percent. Find the percent of the number.
35. 75% of 12 36. 20% of 95 37. 30% of 50 38. 70% of 90 39. 50% of 94 40. 10% of 130 41. 40% of 175 42. 25% of 500
43. Plants Alfalfa plants can take up metals from the ground and store them in their roots and stems. In 2002, a scientist claimed that an alfalfa plant could produce 20% of its weight in gold by taking up tiny gold particles left behind from rock mining. How many pounds of gold could be produced from 3000 pounds of alfalfa plants?
44. Astronomy The International Space Station orbits Earth about every 90 minutes. About 40% of the time, Earth prevents the space station from receiving direct sunlight. About how many minutes per orbit does the space station not receive sunlight?
45. *Aitioty Use the definition of percent to explain why 100% = 1.
