Ques:- A man while going dowm in a escalator(which is miving down) takes 50 steps to reach down and while going up takes 125 steps. If he goes 5 times faster upwards than downwards. What will be the total no of steps if the escalator werent moving.
Recent Answer : Added by Admin On 2020-05-17 12:02:27:
let A goes up and B comes down.
assume A takes 1 step in 1sec.
hence,B takes 5 steps in 1sec.
50 steps ll be moved by A in 50/1=50secs
125 steps ll be moved by B in 125/5=25 secs
hence speed of escalator=(difference of no of
steps)/(difference of time)
speed=(125-50)/(50-25)= 3 steps/sec
hence during upward journey of 50secs by A,total steps=50 by
A and 150 by escalator..total=150+50=200
during downward journey of 25 secs by B,total steps=125 by B
and 75 by escalator..total=125+75=200steps.
ANS:200 steps
Ques:- There are 9 coins. Out of which one is odd one i.e weight is less or more. How many iterations of weighing are required to find odd coin?
Recent Answer : Added by Anonymous On 2021-10-22 09:13:01:
How will you know the odd is in lighter one or heavier one from only one weighing. It will require 2 weighing to find the odd set and one weighing for odd coin in that set i.e total 3 weighings.
Ques:- 6 x 3 (3 – 1) is equal to
A. 19
B. 20
C. 36
D. 53
Recent Answer : Added by semahegn On 2022-12-08 16:28:55:
36
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Ques:- The average of 10 numbers is 23. If each number is increased by 4, what will the new average be?
Recent Answer : Added by Rajeswari Suresh On 2021-10-10 19:03:42:
avg of 10nos.=23==>23*10=230
if each no increased by 4 ==> 4*10=40
then new avg is giveen by : 230+40=270
270/10=27
hence the new avg =27
Ques:- There are 6561 balls out of them 1 is heavy.Find the min. no. of times the balls have to be weighed for finding out the heavy ball.
Recent Answer : Added by test On 2021-10-07 15:41:44:
Ques:- If the project already started and you hired in the middle of the project? What will you do?
Ques:- if you are standing on a ballconi so what to do?
Recent Answer : Added by Admin On 2020-05-17 12:04:11:
if am standing on a ballconi so i see the people what they
are doing and how they are handling with the people and
what they are taking to each and everybody.
Ques:- Rs.4500 amounts to Rs.5544 in two years at compound interest, compounded annually. If the rate of the interest for the first year is 12%, find the rate of interest for the second year?
Ques:- Four of the following five are alike in a certain way and hence form a group. Which one of the following does not belong to that group? (a) 21 (b) 35 (c) 49 (d) 63 (e) 56
Recent Answer : Added by Admin On 2020-05-17 12:03:26:
e. 56 is 7*8 which is the product of 7 with even no.
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Ques:- Can you talk about a few significant types of decisions you’ve had to make in your past job?
Ques:- A company requires 11,500 strength.present employees are 200 women , men and 6500 unmarried To reach the target how many women required to maintain the same ratio?
Ques:- The number of prime numbers between 301 and 320 are
A. 3
B. 4
C. 5
D. 6
Recent Answer : Added by Vaibhavi Shanbhag On 2022-08-24 17:03:34:
5
307,311,313,317,319
Ques:- In a team of 12 persons, 1/3 are women and 2/3 are men. To obtain a team with 20% women how many men should be hired?
Recent Answer : Added by Admin On 2020-05-17 12:00:23:
12(1/3) = 4 so women = 4
==>men = 12-4 = 8
if team needs 20% of women then men Will be 80%
consider u want to hire “x” men
so,
(12+x)(80/100) = 8 + x
so, x= 8
Ques:- A rectangular plate with length 8 inches, breadth 11 inches and thickness 2 inches is available. What is the length of the circular rod with diameter 8 inches and equal to the volume of the rectangular plate?
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Ques:- One student takes 20 mins to reach school if he goes at a speed of 15kmph .At what speed should he go to reach in 15 mins ?
Recent Answer : Added by DK BOSS On 2021-07-30 16:26:23:
1) time =20mins,speed=15kmph=15*(5/18)=25/6 m/sec
distance=20*(25/6)=250/3 m
then 2) given as time =15min
speed=250/3*15=(50/9)*(18/5)kmph=20kmph
Ques:- How would you show co-workers the importance of co-operation?
Ques:- Two trains are coming from opposite directions with speeds of 75 km/hr and 100 km/hr on two parallel tracks. At some moment the distance between them is 100 km. After T hours, distance between them is again 100 km. T is equal to
A. 1 hr
B. $$1{1} / {7}$$
C. $$1{1} / {2}$$
D. 2 hrs
Recent Answer : Added by Clepina On 2022-08-14 18:01:55:
1(1/7)hr
Ques:- A is thrice as efficient as B and is, therefore, able to finish a piece of work 10 days earlier than B. In how many days A and B will finish it together?
Recent Answer : Added by Abhi Chatterjee On 2022-01-08 16:05:10:
Let n be the number of days it takes A and B, working together, to finish. And we know B=A+10 and B=3A, so:
3A=A+10
2A=10
A=5
Then B=15
So:
1/A + 1/B=1/n where n is the total amount of days. So:
1/5 + 1/15=1/n
3n+n=15
n=15/4 days
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Ques:- X can do a piece of work in 10 days. He works at it for 4 days and then Y finishes it in 9 days. In how many days can X and Y together finish the work?
let A goes up and B comes down.
assume A takes 1 step in 1sec.
hence,B takes 5 steps in 1sec.
50 steps ll be moved by A in 50/1=50secs
125 steps ll be moved by B in 125/5=25 secs
hence speed of escalator=(difference of no of
steps)/(difference of time)
speed=(125-50)/(50-25)= 3 steps/sec
hence during upward journey of 50secs by A,total steps=50 by
A and 150 by escalator..total=150+50=200
during downward journey of 25 secs by B,total steps=125 by B
and 75 by escalator..total=125+75=200steps.
ANS:200 steps