a boat travels upstream 20km in 6 hrs and 18 km downstream
in 4hrs find the speed of boat in still water
a.1/2kmph b. 7/12kmph c.5kmph d.none of these
- 3 Answers
- 8324 Views
- IBM, Satyam, I also Faced
- E-Mail Answers
Answer Posted / simone
v_U = 20/6 = v_0 - v_D
v_D = 18/4 = v_0 + v_D
==> 2*v_0 = 20/6+18/4
==> v_0 = 4
| Is This Answer Correct ? | 1 Yes | 2 No |
Post New Answer View All Answers
Ajay and Vijay ave their salaries in the ratio of 2:3. If each of their salaries are increased by Rs 4000, the new ration comes to be 40:57. How much is the present salary of Vijay?
Write a C Program to declare an array for 2 0 floats. Accept the values from the user sort the two arrays in descending order. Merge the two arrays into a new array and display the new array.
be * be = acb a,b,c,e are non zero numbers find b,e.
In a company 30% are supervisors and 40% employees are male if 60% of supervisors are male. What is the probability that a randomly chosen employee is a male or female?
A school has 30% students from Maharashtra .Out of these 20% are Bombey students. Find the total percentage of Bombay?
A cycled from P to Q at 10 kmph and returned at the rate of 9 kmph. B cycled both ways at 12 kmph. In the whole journey B took 10 minutes less than A. Find the distance between P and Q.
albert and fernandes they have two leg swimming race. both start from opposite and of the pool. On the first leg, the boys pass each other at 18 mt from the deep end of the pool. during the II leg they pass at 10 mt from the shallow end of the pool. Both go at const speed. but one of them is faster. each boy rests for 4 sec to see at the end of the i leg. what is the length of the pool.
Find the correct meaning of the following phrase: To bite the dust
A chain is broken into three pieces of equal lengths containing 3 links each. It is taken to a blacksmith to join into a single continuous one. How many links are to to be opened to make it ?
if the radius of the circle is increased by 6% then its area increased by
the plane question was asked.it took off from 7 degree 53' 6.1'' and landed at 8 degree 6' 43.5''.it takes 12 hours to travel between these points.then what will be local time at destination ?
Sum of a series of n numbers is n+8. Find second (or second last) no.
the program requires 4000(n)1/2 [ie square root of n].if size of program was increased by 1% then calculate the percentage change in size of program.
the matrix of a(7,9) was given.the address of the first byte of a(1,1)=1258.it takes 4 bytes to store the nuymber. then calculate the address of the last byte of a(5,8)
There are 5 boxes in a cargo. The weight of the 1st box is 200 KG, the weight of the 2nd box is 20% higher than the third box, whose weight is 25% higher than the 1st box weight. The 4th box which weighs 350 KG is 30% lighter than the 5th box. Find the difference in average weight of the 4 heaviest boxes and the four lightest boxes.
