Question
A roads and highway construction firm has 31 bulldozer drivers, 20 crane drivers and 35 cement-mixture drivers. Of the drivers 14 persons can drive both
A roads and highway construction firm has 31 bulldozer drivers, 20 crane drivers and 35 cement-mixture drivers. Of the drivers 14 persons can drive both mixture and dozer, 10 persons can drive both mixture and crane, 10 persons can drive both dozer and crane and 6 persons can drive all the three machines. Determine the total number of drivers of the firm.
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Elementary Algebra
Authors: Jerome E Kaufmann, Rosemary Karr, Karen L Schwitters, Marilyn Massey, R David Gustafson
10th Edition
1305161769, 9781305161764
