Julia rides her horse 18 km with a constant speed of 6.0 km/hr and another 7.0 km with a constant speed of 12 km/hr. what is her average speed for the total trip? show your work

≅ 6.98 km/h

Explanation:

Velocity =Distance/time ⇒ time = distance/speed

Total time = Time spend for 18 km + Time spend for 17 km

Time spend for 18 km = 18/6 ≅ 3 h

Time spend to 7 km = 7/12 ≅ 0.58 h*

Total time = 3.58 h

So average speed for total trip ≅ 25/3.58 ≅ 6.98 km/h

*time can be converted to minutes but the answer will be the same.

where's the following? you gotta add it to know what the choices are

explanation:

the correct choice is a .

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