This weekend, Martha has time to read 40 pages of economics and 30 pages of sociology. Alternatively, she could read 10 pages of economics and 90 pages of sociology. Which of these equations describes all combinations of pages of economics, E, and sociology, S, that she could read over the weekend?
A) E/2+S=50
B) E + S = 100.
C) E + S = 70.
D) 2E + S = 110.
E) All of the above.

Question

Quizplus · Accepted Answer

The equation 2E + S = 110 represents the combinations of pages Martha can read, as it satisfies both scenarios: (2*40 + 30 = 110) and (2*10 + 90 = 110).

This Weekend, Martha Has Time to Read 40 Pages of Economics