Ques:- A man swims downstream 30 km and upstream 18 km taking 3 hours each time, what is the speed of the man in still water?
Recent Answer : Added by Admin On 2022-09-29 16:10:32:
Given:
Speed of man downstream= 30/3=10km/h
Speed of man in upstream=18/3=6km/h
Speed of man in still water=1/2 (speed of upstream+ speed of down stream)
= 1/2 (10+6)
=1/2*16
=8km/h
Ques:- A box contains 3 blue marbles, 4 red, 6 green marbles and 2 yellow marbles. If three marbles are drawn what is the probability that one is yellow and two are red?
Ques:- The perarl city express runs between chennai and _______
Ques:- From the sum of 17 and -12, subtract 48
A. -17
B. -20
C. -43
D. -48
Recent Answer : Added by mohit On 2022-09-02 17:02:42:
17and+-12=5-48=-43
Ques:- In a race if A beat B by 15m, A beat C by 25m and in a race between B and C, B beat C by 15m.Find the length of the tracks.
Ques:- The length of the bridge, which a train 130 m long and traveling at 45 km/hr can cross in 30 sec is?
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Ques:- Two trains are on same track and they are coming toward each other. The speed of first train is 50 KMs/h and the speed of second train is 70 KMs/h. A bee starts flying between the trains when the distance between two trains is 100 KMs. The bee first flies from first train to second train. Once it reaches the second train, it flies back to the second train ? and so on until trains collide. Calculate the total distance traveled by the bee. Speed of bee is 40 KMs/h. .
Recent Answer : Added by DK BOSS On 2021-07-15 09:17:12:
Answer: 66.67 km approx.
Solution:
Let the first train A move at u km/h.
Let the second train B move at v km/h.
Let the distance between two trains be d km
Let the speed of bee be b km/h
Therefore, the time taken by trains to collide = d/(u+v)
Now putting all the known values into the above equation, we get,
u = 50 km/hr
v = 70 km/hr
d = 100 km
b = 80 km/hr
Therfore, the total distance travelled by bee
= b*d/(u+v)
= 80 * 100/(50+70)
= 66.67 km (approx)
Ques:- Tell something About Youself ?
Ques:- Please explain your self
Ques:- A man, a woman, and a child can do a piece of work in 6 days. Man only can do it in 24 days. Woman can do it in 16 days and in how many days child can do the same work?
A. 8
B. 14
C. 16
D. 18
E. 25
Recent Answer : Added by RENA On 2022-10-07 17:19:37:
I think the answer is: 16
the woman faster *1.5 from the man, every day.
because that, the exersize is:
24/1+1.5+x=6
x=1.5
24/1.5=16!
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Ques:- Expand ——UCIL
Ques:- Given n red balls and m blue balls and some containers, how would you distribute those balls among the containers such that the probability of picking a red ball is maximized, assuming that the user randomly chooses a container and then randomly picks a ball from that?
Ques:- How many degrees there between the two hands of a clock at 3:15?
Recent Answer : Added by J. Cody Stockwell On 2022-08-14 16:36:03:
The hour hand advances between individual numbers as the minute hand makes a full path around the hour. The hour hand was pointing directly at 3 at 3:00, but at 3:15 it has advanced 1/4 of the way between 3 and 4. The number of degrees between numbers 30 (because 360/12). That gives you 30/4 = 7.5. The number of degrees between the two hands is 7.5 degrees.
Ques:- Difference between mass and weight
Ques:- 3 persons started placementpapers with a capital of Rs.3000 . B invest Rs.600 less than A, C invest Rs.300 less than B. Then what is the share amount of B in a profit of Rs.886 ?
Recent Answer : Added by Admin On 2020-05-17 12:04:24:
Rs.265.80
Ques:- Side of rhombus is 5cm and sum of lengths of diagonals is 12cm. what is the area of rhombus?
Ques:- WHAT IS THE IMPORTANCE OF MS EXCEL & MS- WORD AND WHAT ARE ITS MAIN APPLICATION IN COMPANIES
Ques:- A traveler walks a certain distance. Had he gone half a kilometer an hour faster , he would have walked it in 4/5 of the time, and had he gone half a Kilometer an hour slower, he would have walked 2 ½ hr longer. What is the distance?
Recent Answer : Added by Nitesh On 2021-05-28 08:49:20:
d / (x+1/2) = 4/5 * t
and d / (x-1/2) = 5/2 + t
solving we get d = 15.
Ques:- While packing some return gifts, a mother decides to put some toffees in each gift packet. If she keeps 5 toffees in each packet, she is left with none. But if she keeps 2, 3 or 4 toffees in a packet, she is left with 1 toffee . What is the minimum number of toffees that she needs?
Ques:- Pipe A can fill in 20 minutes and Pipe B in 30 minsand Pipe C canempty the same in 40 mins.If all of them worktogether, find the timetaken to fill the tank(a) 17 1/7 mins(b) 20 mins(c) 8 mins(d) none of these
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Ques:- A contractor undertakes to complete the construction of a tunnel 720 meters long in 240 days and employs 60 men for the purpose. After 120 days, he finds that only 240 meters of the tunnel is complete. How many more men should be employ in order to complete the work in time?
Recent Answer : Added by Cynthia Birungi Muhumuza On 2022-08-14 16:34:47:
60 more men
Ques:- ABOUT MY FAMILY & EDUCATION
Ques:- The sum of the first four primes is
A. 10
B. 11
C. 16
D. 17
Recent Answer : Added by Anjum Parveen On 2022-03-09 16:31:39:
Given:
Speed of man downstream= 30/3=10km/h
Speed of man in upstream=18/3=6km/h
Speed of man in still water=1/2 (speed of upstream+ speed of down stream)
= 1/2 (10+6)
=1/2*16
=8km/h