CATArithmetic > Hard3(5−1)3(\sqrt{5}-1)3(5−1)12(5−2)12(\sqrt{5}-2)12(5−2)3(3+5)3(3+\sqrt{5})3(3+5)3(3−5)3(3-\sqrt{5})3(3−5)✅ Correct Option: 4Related questions:CAT 2020 Slot 1Two persons are walking beside a railway track at respective speeds of 222 and 4 km4 \mathrm{~km}4 km per hour in the same direction. A train came from behind them and crossed them in 909090 and 100100100 seconds, respectively. The time, in seconds, taken by the train to cross a stationary object?CAT 2018 Slot 1Train TTT leaves station XXX for station YYY at 3pm3 \mathrm{pm}3pm. Train SSS, traveling at three quarters of the speed of TTT, leaves YYY for XXX at 4pm4 \mathrm{pm}4pm. The two trains pass each other at a station ZZZ, where the distance between XXX and ZZZ is three-fifths of that between XXX and YYY. How many hours does train TTT take for its journey from XXX to YYY ?CAT 2019 Slot 1The wheels of bicycles AAA and BBB have radii 303030 cm and 404040 cm, respectively. While traveling a certain distance, each wheel of AAA required 500050005000 more revolutions than each wheel of BBB. If bicycle BBB traveled this distance in 454545 minutes, then its speed, in km per hour, was