distance grandparents house with dad's house is 165 km. dad left home 7:30 with riding motorcycle with a speed of 50 km / hour.david from Grandpa's home went to the house of father with a motorcycle at speed of 60 km / hour.
a) at what time they will meet in the street
b) the number of kilometers from their grandfather's house would meet on the street

Question

distance grandparents house with dad's house is 165 km. dad left home 7:30 with riding motorcycle  with a speed of 50 km / hour.david from Grandpa's home went to the house of father with a motorcycle at speed of 60 km / hour.
a) at what time they will meet in the street
b) the number of kilometers from their grandfather's house would meet on the street

anonymous · Answer

t=d/r
$$t=\frac{165}{50+60}=\frac{3}{2} \text{ hours}$$They met at 09:00, $$60*1.5=90\text{km} \text{ from} \text{ grandpa}'s\text{  }\text{ house}$$