Jamie's friend Bob is having a party, but Jamie forgot and went to dinner with her friend Emily instead. Bob's party starts in half an hour. Bob lives 30 km away from Jamie, and the restaurant Jamie and Emily are at is three times as far away from Bob's house as Jamie's house is.
How fast would Jamie have to drive in order to get to Bob's party on time?
Choose the correct option: A) 30 km/h B) 45 km/h C) 60 km/h D) 75 km/h E) 90 km/h
Distance between 45 km/hob's house and Jamie's restaurant: 30 x 3 = 90 km   Rate of speed to get to 45 km/hob's house in an hour: 90 x 1 = 90 km/h   Rate of speed to get to 45 km/hob's house in half an hour:   90/2= 
<gadget id="calculator">  90/2</gadget>
<output>45</output>
45 km/h
<result>B</result>
Jamie's friend Bob is having a party, but Jamie forgot and went to dinner with her friend Emily instead. Bob's party starts in half an hour. Bob lives 30 km away from Jamie, and the restaurant Jamie and Emily are at is three times as far away from Bob's house as Jamie's house is.
How fast would Jamie have to drive in order to get to Bob's party on time?