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Two cars start at the same point and simultaneously drive in opposite directions.
The speed of the first car is s miles per hour. The speed of the second car is 5
miles per hour less than the speed of the first car.
How far apart are the cars 1.5 hours after they start moving?

Sagot :

mhanifa

Answer:

  • 3s - 7.5 miles

Step-by-step explanation:

Given

  • The speed of car1 is s,
  • The speed of car2 is 5 less than s,
  • Time is 1.5 hrs.

Solution

Distance equation:

  • Distance = speed * time

If cars move in opposite directions their speeds add up, then the distance between them after 1.5 hours is:

  • (s + s - 5)*1.5 =
  • (2s - 5)*1.5 =
  • 3s - 7.5
ItzTds

Answer:

After 1.5 hr, they are 3s - 7.5 mi away.

Step-by-step explanation:

Forming the expression,

→ 1.5 × (s + s - 5)

Now the required solution will be,

→ 1.5 × (s + s - 5)

→ 1.5 × (2s - 5)

→ 1.5(2s - 5)

→ 3s - 7.5

Hence, answer is 3s - 7.5 miles.

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