Siblings 6

Siblings Martin and Judy decided to visit a castle 10 km from their home. Martin left at 7:30 and walked at a speed of 4 km/h. Judy set off on her bicycle an hour and a half later and rode at 16 km/h. Did Judy catch up with Martin before the castle? If so, at what time, and how far from the castle?

Result

x =  2 km
t3 = 9:30 hh:mm Wrong answer

Step-by-step explanation:

s=10 km t1=7:30=7 hr 30 min =7+6030=7.5 hr=7.5 t2=1.5 h  v1=4 km/h v2=16 km/h  s1=s2  v1 (t+t2)=v2 t 4 (t+1.5)=16 t  12t=6  t=126=0.5  t=21=0.5  s1=v2 t=16 0.5=8 km  s1<s  x=ss1=108=2 km
t3=t1+t+t2=7.5+0.5+1.5=219=9.5=9:30 hh:mm



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