Mr. Quick

Mr. Quick needs to drive from Brno to Prague. There is an oversized load on the D1 highway, which leaves Brno at 11:00 p.m. and its speed is 12 km/h. At what time should Mr. Quick set off first to avoid the traffic jam, i.e. to meet at the Humpolec exit at 110 km of the route, when he expects an average speed of 120 km/h?

Result

t = 7:15 hh:mm Wrong answer

Step-by-step explanation:

s=110 km v1=12 km/h v2=120 km/h  s=s1=s2 t1=s/v1=110/12=6559.1667 h t2=s/v2=110/120=12110.9167 h t3=2423.00=1 h  t=t1t3t2=9.166710.9167=7.25=7:15 hh:mm



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