Sumali sa IDNStudy.com at tuklasin ang komunidad ng mga taong handang tumulong. Ang aming komunidad ay nagbibigay ng eksaktong sagot upang matulungan kang maunawaan at malutas ang anumang problema.

From 11:00 A.M. to noon, the temperature rose by 20 C; at noon it became cloudy so that by 1:00 P.M. the temperature had dropped by 10 C. The next hour, it rose by 30 C. What was the net result of the temperature changes from 11:00 A.M. to 2:00 P.M.?