Jeremy can paint a room in 20 hours and Kahleed can do the same job in 17 hours. Which equation can be used to determine how long it would take Jeremy and Kahleed to paint the room if they worked together? Let t represent the time in hours.

Two trains leave a station on different tracks. the tracks make an angle of 130°, with the station as a vertex. the first train travels 100 km and makes its first stop at point a, while the second train travels 200 km and makes it first stop at point b. how far apart are the trains when both are at their first stop? round the answer to the nearest integer. a) 65 km b) 139 km c) 224 km d) 275 km