The table shows the temperatures of four cities at 11 a.m. and the changes in these temperatures in the next three hours. Which city is the coldest at 2 p.m.?
City p , 11 am -9, 2pm 8 degrees warmer
City q, 11 am 7, 2 pm 7 degrees colder
City r, 11 am -3, 2 pm 3 degrees warmer
City s, 11 am 4, 2 pm 6 degrees colder
To determine the temperatures at 2 p.m., we need to add the changes in temperature to the temperatures at 11 a.m.:
City p, 2 pm = -9 + 8 = -1 degrees
City q, 2 pm = 7 - 7 = 0 degrees
City r, 2 pm = -3 + 3 = 0 degrees
City s, 2 pm = 4 - 6 = -2 degrees
Therefore, the coldest city at 2 p.m. is City s, with a temperature of -2 degrees.