Question
The speed of boat downstream and upstream is 36 km/hr
and 26 km/hr respectively. Time taken to travel a distance of (k + 60) km downstream and (l + 40) km upstream is 16 hours, and time taken to travel (k + 120) km upstream and (l + 80) km downstream is 22 hours. Find the approximate difference between the value of k and value of l.Solution
ATQ,
We are given: The speed of the boat downstream = 36 km/h The speed of the boat upstream = 26 km/h The time for traveling (k+60) km downstream and (l+40) km upstream is 16 hours. The time for traveling (k+120) km upstream and (l+80) km downstream is 22 hours. 
After solving these equations, we find: k=321.86 and l = 100.23 The difference between k and l is: k − l = 321.86 − 100.23 = 221.63 So, the difference between k and l is 221.63.
There are nine consecutive even numbers such that the smallest number is 50% of the largest number. Find the sum of the second lowest and second highest...
A waiter income consist of his salary and tips. During one week his tips were 4/5 of his salary. What portion of his income came from tips?
- The largest 5-digit number which is exactly divisible by ‘47’ is:
Sum of squares of three consecutive numbers is 770. Find the sum of first and third number.
180 is divided into two parts in such a way that the fifth part of the first part and the fourth part of the second are in the ratio 4:5. Second part i...
Which of the following is a prime number?
In a shelter, there are some horses and some pigeons, only. If the total number of heads counted is 40 and total number of feet counted is 112, then fi...
A two-digit number is such that the sum of its digits is 12. If the number formed by reversing its digits is 18 less than the original number, find the ...
Relevant for Exams:
