In a 4 × 100 m relay race, Chana runs the first 100 meters in XIX seconds. Jack runs the second leg in XXI seconds. Yuan runs the 3rd leg in XXVIII seconds and Zhang runs the final 100 meters in XVI seconds. In how many seconds did they complete the race (in Roman numerals)?
The weight of people travelling on a bus is ^@730^@ kg ^@127^@ g. Two new passengers weighing ^@80^@ kg ^@247^@ g and ^@70^@ kg ^@252^@ g took the same bus. Find the total weight of people travelling on that bus.