Pertanyaan
Ron and Jake started walk ing at constc ant speeds from the same spot in opposite dire ctions along a straight boardwa lk.Afte the had Nalked for 30 min, they apart .Ron's s speed was 3.5km/h What was Jake's speed?
Solusi
Jawaban
Here's how to solve this problem:**1. Understand the Problem:**Ron and Jake walk in opposite directions. Their combined distance after 30 minutes is 7 km. We know Ron's speed, and we need to find Jake's speed.**2. Convert Units:*** Ron's speed is given in km/h, but the time is given in minutes. Let's convert 30 minutes to hours: 30 minutes * (1 hour / 60 minutes) = 0.5 hours**3. Calculate the Distance Ron Walked:*** Distance = Speed × Time* Distance Ron walked = 3.5 km/h × 0.5 h = 1.75 km**4. Calculate the Distance Jake Walked:*** The total distance between them is 7 km. Since they walked in opposite directions, the sum of their distances is 7 km.* Distance Jake walked = Total distance - Distance Ron walked = 7 km - 1.75 km = 5.25 km**5. Calculate Jake's Speed:*** Speed = Distance / Time* Jake's speed = 5.25 km / 0.5 h = 10.5 km/h**Answer:** Jake's speed was 10.5 km/h.