Ques:- The difference between simple and compound interests compounded annually on a certain sum of money for 2 years at 4% per annum is Re. 1. The sum (in Rs.) is?
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Ques:- A train 100 meters long passes a platform 100 meters long in seconds. The speed of the train is
A. 36 km/hr
B. 52 km/hr
C. 72 km/hr
D. 92 km/hr
Recent Answer : Added by ThinkAlike On 2022-03-09 16:31:07:
= 100 + 100 = 200 m
Time taken by train = 10 sec.
∵ Speed = Distance/Time
⇒ Speed of train = 200/10 = 20 m/sec.
∴ Speed of train = 20 × 18/5 = 72 kmph.
In question they left 10 seconds
Ques:- The speed of a train is 90 kmph. What is the distance covered by it in 10 minutes?
Recent Answer : Added by Sahana HP On 2021-10-12 12:52:44:
Distance =speed ×time
Speed =90kmph
90km take 60min time to reach
In 10min the distance covered =?
D=90×10/60
900/60
D=15
Ques:- There was a race between 3 people. Me, Doug and Anne. When I take 21 steps the distance covered is equal to Doug's 24 steps and Anne's 28 steps. I take 6 steps to every 7 steps of Doug and 8 steps of Anne. Who won the race?
Recent Answer : Added by Kalyani Nanaware On 2022-08-14 16:43:09:
Doug won the race
Explanation-
The ratio of steps covered by me, Doug, and Anne is = 6:7:8
Since Distance covered in Me 21 steps = Distance covered by Doug 24 steps = Distance covered by Anne 28 steps
LCM (21, 24, 28) = 168
For a distance of 168 units, the ratio of the distance covered in each step is;
= 8 : 7 : 6
Therefore the ratio of speeds is;
= 8×6: 7×7: 6×8
= 48 : 49 : 48
Here, the speed of the Doug is more than the speed of me and Anne
Hence, Doug won the race
Ques:- Two trains 140 m and 160 m long run at the speed of 60 km/hr and 40 km/hr respectively in opposite directions on parallel tracks. The time which they take to cross each other is?
Ques:- A man engaged a servant on the condition that he would pay him Rs.710 and a uniform after a year service. He served only for 8 months and got Rs.460 and a uniform. Find the price of the uniform?
Recent Answer : Added by PRERNA SAHU On 2021-11-13 11:02:18:
ans=13.33
solution: (710/12)*8 – 460
Ques:- Motorboat A leaves shore P as B leaves Q; they move across the lake at a constant speed. They meet first time 600 yards from P. Each returns from the opposite shore without halting, and they meet 200 yards from. How long is the lake?
Recent Answer : Added by vunanok On 2022-04-02 07:00:16:
800 yards
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Ques:- Two years ago a man was 6 times as old as his son. After 18 years, he will be twice as old as his son. Their present ages ( in years) are
A. 31, 7
B. 32, 7
C. 34, 9
D. 36, 11
Recent Answer : Added by Hardik gupta On 2022-09-15 16:36:08:
32,7
Ques:- A person takes 20 minutes more to cover a certain distance by decreasing his speed by 20%. What is the time taken to cover the distance at his original speed?
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Ques:- Out of 15 consecutive numbers, 2 are chosen at random. The probability that they are both odd or both prime is?
Recent Answer : Added by MAMIDI LIJITA SREE On 2023-01-21 17:36:45:
The answer cannot be determined as there is a particular formula where the consecutive numbers start.
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Ques:- A certain number of men can finish a piece of work in 10 days. If however there were 10 men less it will take 10 days more for the work to be finished. How many men were there originally?
Recent Answer : Added by Admin On 2022-09-28 18:22:01:
This is Expert Verified Answer
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Lipimishra2
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Let the no. of men (originally) be x.
x no. of men require 10 days.
if however there were 10 men less it will take 10 days more for the work to be finished. ——> means x-10 men require 10+10=20 days.
10x = 20 (x-10)
x = 2x -20 => x = 20.
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Recent Answer : Added by Abdul Rawoof A R On 2021-12-13 17:58:37:
Call from HR for interview in an unexpected time!
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Ques:- A person with some money spends 1/3 for cloths, 1/5 of the remaining for food and 1/4 of the remaining for travel. He is left with Rs 100/- How much did he have with him in the begining?
Recent Answer : Added by Admin On 2020-05-17 12:00:38:
ans: 250 rs exactly
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Ques:- There are two water tanks X andY , X is much smaller than Y. While water fills at the rate of 1 liter every hour in X, it gets filled up like, 10, 20, 40, 80, 160 in tank Y. (At the end of first hour, Y has 10 liters, second hour it has 20 liters and so on). If tank Y is 1/32 filled of the 21 hours, what is total duration of hours required to fill it completely?
Recent Answer : Added by Grace On 2020-11-25 15:02:28:
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= 100 + 100 = 200 m
Time taken by train = 10 sec.
∵ Speed = Distance/Time
⇒ Speed of train = 200/10 = 20 m/sec.
∴ Speed of train = 20 × 18/5 = 72 kmph.
In question they left 10 seconds