Friday, 17 April 2015
BOATS AND STREAMS Basics and Problems
Problems Based on Boats and Streams
To calculate the Problems based on the Boats and streams in these type of problems we have to find the Stream speed ,Man speed, Speed against the Water, Speed of Downward Stream.First we have to view some formulas regarding to these type of Problems.
FORMULA:
Man/Boat Speed in Water can be termed as = "a" kmph
Water/river/Stream/ speed can be termed as =" b" kmph
Along with Water Man/Boat Speed termed as =" a+b" kmph
Against the Water Man/Boat Speed = "a-b" kmph
we have to take a look on some of the problems relevant to:
1) The Speed of the Boat with River is 12 kmph against the river is 10 kmph Find the speed of
the Flow?
A) We Know that already a=Speed of the Boat
b=Speed of the Flow
a+b=12
a-b =10
you have to calculate by changing ths signs of them and Calculate the value for B because
we have to find the speed of the Flow.
Speed of the Flow is b=1 kmph
2) A boat can row against the stream 20 kmph speed of the flow is 8 kmph ? find the speed of the Boat?
A) in the Problem given as a-b=20 kmph and given the flow speed as 8 kmph we taken as
b=8 kmph. we taken as a-b=20 because it row's against the Stream.
Substitute the Values as a-8=20 then the value of Speed of the Boat is a= 28 kmph.
3) A Boat DownStream Speed is 36 kmph in 6 hours against the water as 40 kmph in 8 hours
Find the Speed of the Boat?
A) Downward Stream as a+b= 6 kmph ( because 36/6h= 6 kmph)
Against/Upward Stream is a-b=5 kmph (because 40/8h= 5 kmph)
We have to calculate the "a " speed of the boat Cancel the "b" value then we get "a"
value the answer of "a" is 5.5kmph (or) 11/2 kmph
Thursday, 16 April 2015
TIME AND DISTANCE Problem Solving
To Calculate the Distance ,Time and Speed
To Calculate the Time Distance and speed by using these Formulas It helps to u to easily solve the
problems . Every Government,Software Entry Level Aptitude Test is Compulsory It helps to
Complete the Test. Some Formulas are Typed Below:
Formulas :
- Distance=Speed* Time
- Speed=Distance/Time
- Time=Distance/Speed
- Distance can be Measured in Kilometers/meters
- Speed can be measured in Kilometers/hours (or) Meters/seconds
- Time can be Measured in Hours/Second
Conversions:
Formulas :
Kilometers*5/18 We can get the value in Meters/seconds
Meters * 18/5 We can get the value in Kilometers /Hour
- The speed Increases then the Time Decreases and Vice verse.
- Speed is Inversely Proportional to Time
- If the Trains T1, T2 are travelling in the Same Direction then the Relative Speed is
Relative Speed= s1-s2
- If the Trains T1, T2 are Moving in opposite Directions then the Relative Speed is
Relative Speed=s1+s2
- If the Train Cross the Telegraph pole/Tree/Man then we have to calculate as Total Length of the Train
- If the Train Crosses the Platform then we take as Train Length+ Platform Length
- If the Two Trains Crosses in the Direction then We Assume as the Distance =Length of First Train + Length Of Second Train