Mathematics

posted by .

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.

  • Mathematics -

    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

First Name
School Subject
Your Answer

Similar Questions

  1. 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.
  2. 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 …
  3. 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?
  4. 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 …
  5. 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.
  6. 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?
  7. 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 …
  8. 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 …
  9. 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 …
  10. 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 …

More Similar Questions