Which of the following are key words and phrases that translate to addition

36 inches/second = yards/minute how many yards?

Sara made $253 for 11 hours of work. at the same rate how much would he make for 7 hours of work?

Martha is training for a duathlon, which includes biking and running. she knows that yesterday she covered a total distance of over 55.5 miles in more than than 4.5 hours of training. martha runs at a speed of 6 mph and bikes at a rate of 15.5 mph.