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solve this please i will mark him/her the brainlest if they anyone solve it

Sam drives from home 40 km at constant speed of 60 km/h to pick his friend and another 80 km with a constant speed of 100km/h to reach the school

How much time did Sam take to reach his friend’s place from his home? *

1 point

1/3 hour

2/3 hour

4/3 hour

1 hour

How much time will he take to reach school after picking up his friend? *

1 point

1/5 hour

2/5 hour

3/5 hour

4/5 hour

How much time did Sam take to travel from home to school? *

1 point

22/5 hour

6/3 hour

6/5 hour

6/8 hour​


Sagot :

Answer:

80 minutes

Step-by-step explanation:

40km is 20% of 60kmph

20% of 60 minutes (1 hour) is 40 minutes.

same thing with 80km and 100kmph

20%