Ask questions and get helpful responses.
Ask a New Question
  1. Questions

maths

A man goes upstream for a distance of 10 kms in 5 hours. Another man goes downstream the same distance of 10 kms in 3 hours. what is the difference in speeds of two men if the river speed is 0.5 km/hr

  1. 👍
  2. 👎
  3. 👁
  4. ℹ️
  5. 🚩
roger

  1. since distance = speed*time, if the still-water speeds of the men are a and b,

    (a-.5)(5) = 10
    (b+.5)(3) = 10

    5a - 5/2 = 10
    3b + 3/2 = 10

    b-a = (10 - 3/2)/3 - (10+5/2)/5 = 1/3

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩
    Steve

  2. Sir, I am also getting this as the answer. but the options given are :-

    a). 2.45
    b). 2.3
    c). 1.33
    d). 1.56

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩
    roger

  4. 1.33

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩
    manoj

  5. upstream speed =Distance/time
    =10/5=2 kmph
    downstream speed of =10/3=3.33kmph
    difference =3.33-2=1.33

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩
    pradeep ponduri

Respond to this Question

First Name

Your Response

Similar Questions

  1. physics

    A toy plane p starts flying from point A along a straight horizontal line 20 m above ground level starting with zero initial velocity and acceleration 2 m /s² as shown. At the same instant, a man P throws a ball vertically

  2. Calculus

    A man of height 1.7 meters walks away from a 5- meter lamppost at a speed of 1.1 m/s. Find the rate at which his shadow is increasing in length. An illustration shows a man walking past a lamp post. The lamp is 5 units above the

  3. two dimensional kinematics

    A freight train is moving at a constant speed of Vt. A man standing on a flatcar throws a ball into the air and catches it as it falls. Relative to the flatcar, the initial vellocity of the ball is Vib straight up. a. What are the

  4. English

    Why did the nightly knocking at the temple finally stop in “Old Man of the Temple” by R. K. Narayan? A. The narrator helped the old man find his way to his wife. B. They drove the old man out of town, so he wouldn’t bother

  1. english

    I need to write a one page report - not a complete story. It must be man vs man, as well as man vs self or man vs nature. not sure if i understand can someone explain What you are describing are different types of conflicts in

  2. Clinical Calculations

    Suppose that the adult dosage for a given medication is 150 milligrams​ (mg) per day for every 9 kilograms​ (kg) of body weight. ​a) At this rate find the daily dose for a man who weighs 117 kg. ​b) If the man is to

  3. Calculus

    A street light is hung 18 ft. above street level. A 6-foot tall man standing directly under the light walks away at a rate of 3 ft/sec. How fast is the tip of the man's shadow moving? I know I would've to set up a proportion. 18 /

  4. PHYSICS

    Two skaters, a man and a woman, are standing on ice. Neglect any friction between the skate blades and the ice. The mass of the man is 95 kg, and the mass of the woman is 55 kg. The woman pushes on the man with a force of 57 N due

  1. Math

    A man is running around a circular track that is 200m in circumference. An observer uses a stopwatch to record the runner’s time at the end of each lap, obtaining the data in the tale below. a. What was the man’s average speed

  2. Maths

    A man,1.5m tall,observes a bird at the tip of a tree,4.5m high.if the bird is 8m away from the man,calculate the distance between the feet of the man and the base of the tree.

  3. PHYSICS

    Two skaters, a man and a woman, are standing on ice. Neglect any friction between the skate blades and the ice. The mass of the man is 88 kg, and the mass of the woman is 58 kg. The woman pushes on the man with a force of 56 N due

  4. algebra

    A man (we'll refer to him as man 1) starts from his home at 8 A.M. and drives a steady rate of 50 MPH. An hour later a second man ( man 2) starts to follow him. Draw a graph to represent these facts. From the graph find when man 2

Still need help? You can ask a new question.