Mathematics
posted by Fatima .
A motorist do does the first part of his journey at an average speed of 54km/h. Then he increases the speed to 60km/h for the rest of the journey. If he travels 225km in 4 hours, what is the distance traveled for the rest of his journey? show clear steps.

54 T1 + 60 T2 = 225 (km)
T1 + T2 = 4 (hours)
54 T1 + 54 T2 = 216
6 T2 = 9
T2 = 1.5 hours
T1 = 2.5 hours
60 T2 = 90 km is travelled at the higher speed.
Respond to this Question
Similar Questions

Mathematics
For the first 1 1/2 hours of a 91km journey the average speed was 30km/h.If the average speed for the reminder of the journey was 23km/h, calculate the average speed for the entire journey. 
Math
A motorist makes a journey of 240 km from Singapore to Malacca to visit his inlaws at an average speed of x kilometers. On his return journey, his average speed is reduced by 6km/hour due to traffic. If the return journey takes 20 … 
gr 11 physics
Steve traveled the first 2 hours of his journey at 40km/h and the last 3 hours of his journey at 80km/h. What is his average speed of travel for the entire journey? 
math
A motorist does the first part of the journey at an average speed of 54 km/h. He then increases his speed to 60 km/h for the rest of the journey. if he travels 225 km in 4 hours, what is the distance traveled for the first part of … 
math
A cyclist travels for 60km at x km/h and 180km at y km/h and takes 10 hours altogether for the journey. If the speed are interchange, the journey takes 8.6 (8 whole number 2 over 3) hours. Find x and y. 
maths
1. A train was travelling at an average speed of 80km/h. If the train began a journey of 200km at 4.35pm, at what time did it reach its destination? 
Math
Kate cycles the first 350 km of a 470 km journey at a certain average speed and the remaining distance at an average speed that is 15 km/h less than that for the first part of the journey. If the time taken for her to travel each part … 
statistics
a person drove on a highway first 5km at a speed of 60km/h ,the second 5km at a speed of 85km/h , third 5km at a speed of 92km/h and last 5km of his journey,the speed was 8okm/h.Use suitable average to find average speed of the journey … 
Math
A guy travels to his home which takes 4 1/3hrs and a distance of 350km, he travels 60km/h for the first part and 90km/h for the rest of the journey. Find: An equation for the distance An equation for the time Detemine the distance … 
Math Algebra
A drive took some hours to travel from Rome to Milan. His average speed for the whole journey was 80 km/hour. For the first half of the journey he traveled at an average speed of 50km/hour. Find his average speed for the second half …