In a race from pt. X to pt Y and back, Jack averages 0
miles/hr to pt Y and 10 miles/hr back to pr X. Sandy
averages 20 miles/hr in both directions. If Jack and Sandy
start race at same tIme, who’ll finish 1st
Jack/Sandy/they tie/Impossible to tell
Answer Posted / shiva s k
SANDY WINS THE RACE SINCE AVG SPEED OF JACK IS 0 WHERE AS
SANDY IS 20MILES/HR BY THE FORMULA
AVERAGE SPEED=2*a*b/(a+b)
| Is This Answer Correct ? | 21 Yes | 2 No |
Post New Answer View All Answers
In a typical motor cycle rally, every motor cycle has to reach a speed of 20 m/min within a minute and it increase its speed by 20 m/min and the sum was 1600 m/min. Four minutes later, a new motor cyclist started running in the race. After another two minutes, the motor cyclist with the speed of 400 m/min stopped due to injuries and again two new motor cyclist started running in the race. What is the current average speed?
a vendor solds two things at same cost 12 RS with one item at 25%profit and other at 20%loss,by this transaction he made profit or loss by how much
what is topic on pz cussons essay writing?
In a class total 34 students, 16 are have a brother, 15 are have sisters, 9 students don't have either brothers or sisters.Find the number of students having both brother and sisters.
if 2x-y=4 then 6x-y is
how to get the system time dynamically in orcle
A boy has Rs 2. He wins or loses Re 1 at a time If he wins he gets Re 1 and if he loses the game he loses Re 1. He can loose only 5 times. He is out of the game if he earns Rs 5. Find the number of ways in which this is possible?
Gaurav buys milk at Rs. 60 per litre, adds water to it and then sells it at Rs. 75 per litre. What should be the ratio of milk to water to get a profit of 37.5%?
Three independent mechanisms A, B and C have been incorporated for power saving in a plant producing respectively 30%, 40% and 10% efficiency. Assuming that they operate independently, what is the net power efficiency achieved
In a mixture R is two parts, S is one part . In order to mixture how much R is to be added.
Rakesh buys 1 gallon of milk for Rs.12 and mixes it with 20% water. He then sells it for Rs.15, What is the percentage of gain that Rakesh would get.
A sphere of 10.5 cm radius is melted. It is then casted into a cuboid of maximum volume. What will be the total surface area of such cuboid?
There are 1997 doors in the courts. 1997 people came out from each door. One door is closed. That many people came out from each door. This continues till a single person come out of the single open door. Find the no of people inside the court?
There is a lucky draw held every day. If there is a winning number eg. 1876, then all possible numbers like 1867 ,1687,1768 etc are the numbers that match irrespective of the position of the digits. Thus all these numbers qualify fr the lucky draw prize. Assume there is no zero digit in any numbers. Write a program to show all the possible winning numbers if a "winningnumber" is passed as an argument to the function. i want a solution in c/c++ language
If "PROMPT" is coded as QSPLOS ,then "PLAYER" should be?