Problem 1. Exercise 12, page 55 in Sanchez (2019) textbook.Section 2.10. Write your answer in the space below. A tract of land in the Alabama Piedmont contains a number of dead shortleaf pine trees, some of which had been killed by the littleleaf disease, some by the southern pine beetle, and some by fire. Suppose that out of 500 trees, . 70 have littleleaf disease alone . 50 have Souther pine beetle alone . 10 were killed by fire alone . 100 were killed littleleaf disease and southern pine beetle . 160 were killed by littleleaf disease and fire . 90 were killed by pine beetle and fire . 20 were killed by all three factors What proportion of trees were killed by disease? Draw a Venn diagram to illustrate your answer, but also use formulas derived from the theorems seen in Chapter 3. ( Johnson, 2000)