In a particular state, 70% of the counties received some rain on Monday, and 55% of the counties received some rain on Tuesday. No rain fell either day in 35% of the counties in the state. What percent of the counties received some rain on Monday and Tuesday?
Pick one: A) 20% B) 40% C) 50% D) 60% E) 70%
70 + 55 + 35= 
<gadget id="calculator">70 + 55 + 35</gadget>
<output>160</output>
160%   The number is 60% above 100% because 60% of the counties were counted twice.   The answer is 60%.
<result>D</result>
In a particular state, 70% of the counties received some rain on Monday, and 55% of the counties received some rain on Tuesday. No rain fell either day in 35% of the counties in the state. What percent of the counties received some rain on Monday and Tuesday?