A team of CSI Bethlehem investigates a double homicide which happened on a late summer day. The first body was found in the living room in which the temperature is 82F. The dead body temperature was measured at 3pm and was 88F. At 4pm it was down to 86F. The second body was found in the bedroom, in which the temperature is 70F (air conditioning was on). The body temperature was also measured at 3pm and 4pm and was, respectively, 80F and 78F. We assume for simplicity that live body 1 temperature is 100F. The investigators want to determine which of the two people died first. Can you help them?