Give the step-by-step reasoning process and then the final answer. Jane's mother agreed to pay her $.50 for every flower bulb that Jane planted. Jane planted 20 tulip bulbs and half that amount of iris bulbs. She also planted 30 daffodil bulbs and three times that amount of crocus bulbs. How much money did Jane earn?
20 tulip bulbs at $.50 each is 20 * .50 $10.00. She planted half that amount of iris' so 20 / 2 = 10 bulbs. 10 iris bulbs at $.50 each is 10 * .50 = $5.00. 30 daffodil bulbs at $.50 each is 30 * .50 = $15.00. She planted three times that amount of crocus bulbs to 30 * 3 = 90 bulbs. 90 crocus bulbs at $.50 = $45.00. All total, she earned 10 + 5 + 15 + 45 = $75.00.
The final answer: 75.