Answer:
2 hours and 40 minutes
Step-by-step explanation:
After 4 hours, 1st person went 20 * 4 = 80 km
+1 hours rest
So now after total 5 hours (when 2nd one started), 1st one is 80 km ahead.
2nd bicyclist rate is 50
1st bicyclist rate is 20
So, for each hour, 2nd bicyclist advances 50 - 20 = 30 kilometers
How long will it take him, at this rate, to catch up 80 kilometers??
Simple!
30 km catch up every hour, so
80/30 = 2 2/3rd hours
That would be 2 hours 40 minutes to catch up
Answer:
2 hrs
Step-by-step explanation:
after 4 hours the first biker went 80 miles (4 hours*speed(20kph))
when the first biker sat down to take a break the second one started, after one hour the second biker has went 50 kilos and the first biker nothing (because of the break).
so now the distance between them is 30 miles because the first one went 80 kilos, and the second went 50, so 80-50=30 so now they have 30kilos between them and scine the diffrence in the speed is 30 and they have 30 apart then just one more hour, and now 1 hour +1 hours=2 hours
