Ques:- Currently, the age of a father is three times that of his son. 2.5 years from now, age of the father becomes 2.5 times that of the son. The age of son currently is?
Recent Answer : Added by Bhagirathi H On 2022-09-15 16:37:05:
Fathers before age=3*before sons age—-(1)
After 2.5 years..
Fathers before age+2.5 years =2.5*sons age—-(2)
Substitute (1) in (2),
3*sons before age+2.5 years=2.5*sons age
0.5*sons age=2.5 years
Sons before age=5years
So current age after 2.5 years,
Sons before age+2.5 =5+2.5=7.5 years
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Ques:- There are 2 toy cars facing each other at a distance of 500 cm from each other . Each other moves forward by 100 cm at a speed of 50 cm/sec and then moves back by 50 cm at a speed of 25 cm/sec . how long will it take the cars to collide each other ?
Recent Answer : Added by Admin On 2020-05-17 12:04:25:
It will take 14 seconds, not 20 sec
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Ques:- If it is possible to make only one meaningful word with the second, the third, the sixth and the eighth letters of the word FRAGMENT, using each letter only once, then which of the following will be the third letter of that word? If no such word can be formed, the give ‘X’ as the answer and if more than one such words can be formed, then give ‘Y’ as the answer.
Recent Answer : Added by Kingsley On 2022-08-14 16:31:29:
Y
Ques:- Two people are travelling through flight. Both have parachute and jump anywhere randomly i.e none of them knows who has jumped where.(Assume there's a big desert and they jump at any random location). Now, both of them have a single piece of paper on which they can write instructions before jumping and that's the only way they can meet each other. What would they write on paper before jumping ?
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Ques:- In each questions below are given two statements followed by two conclusions numbered I and II. Statements : Some kings are queens. All queens are beautiful. Conclusions :
I. All kings are beautiful. II. All queens are kings.
A. if only conclusion I follows
B. if only conclusion II follows
C. if either conclusion I or II follows
D. if neither conclusion I nor II follows
E. if both conclusions I and II follow
Recent Answer : Added by Vayulurusurya On 2022-03-09 16:29:51:
Conclusion 1 follows
Ques:- Perimeter of the back wheel = 9 feet, front wheel = 7 feet on a certain distance, the front wheel gets 10 revolutions more than the back wheel .What is the distance?
Recent Answer : Added by VSEC_me On 2022-08-14 16:34:00:
Let the total rotations be x:
So the distance covered by both the wheels will be same,
9 * x = 7 * (x + 10)
x = 35 rotations
distance travelled = 9 * 35 = 7 * (35 + 10) = 315 feet
Ques:- Number of times 29th day of the month occurs in 400 consecutive year is
A. 4400
B. 4497
C. 4800
D. 4600
Recent Answer : Added by AVIJIT BERA On 2021-11-26 16:30:00:
4400+(97 leap year )=4497
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Ques:- A light bulb is hanging in a room. Outside of the room there are three switches, of which only one is connected to the lamp. In the starting situation, all switches are 'off' and the bulb is not lit. If it is allowed to check in the room only once.How would you know which is the switch?
Recent Answer : Added by Mukesh On 2022-08-14 18:02:46:
Put switch 1 on and leave it on for 2 minutes, then switch it off.
Put switch 2 on and leave it on, then walk into the room.
If the light is on, the answer is switch 2.
If the light is off but the bulb is warm when you feel it, the answer is switch 1.
If the light is off and the bulb is cold when you feel it, the answer is switch 3.
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Ques:- A person goes 4/5 of his usual speed reaches 10 min late to his destinaton, time taken?
Recent Answer : Added by N On 2021-05-18 10:48:11:
time is inversely proportional to speed.
So if speed taken is 4/5 of usual speed, time taken will be 5/4 of usual time
and the difference between time is 10 min
So,
(5/4)t -t=10 min
usual time,t=40 min
late time=40+10=50 min
Ques:- The ratio fo Boys to Girls is 6:4. 60% of the boys and 40% of girls take lunch in the canteen. What % of class takes lunch in canteen.
Recent Answer : Added by vivin On 2022-03-09 16:46:02:
assume the ratio 6:4 to be 60:40
boys taking lunch in canteen=60% of 60=36
Girls taking lunch in the canteen=40% of 40=16
Total boys and girls taking lunch in the canteen=52
Total students we assumed is 60+40=100
Therefore percentage of boys and girls taking lunch in the canteen=(52/100)*100=52%
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Ques:- In a certain code, PEAK is written as 3512 and DINE is written as 6895. How is KIND written in that code?
Recent Answer : Added by S pushpa On 2021-06-17 10:43:50:
C-2896
Ques:- The length and breadth of a rectangle is increased by 10% and 25% respectively. What is the increase in the area?
Ques:- A train crosses a platform of 120 m in 15 sec, same train crosses another platform of length 180 m in 18 sec. then find the length of the train?
Recent Answer : Added by Sandeep On 2021-07-31 16:36:06:
156
Ques:- Find out the wrong number in the series: 1, 1, 2, 6, 24, 96, 720
A. 6
B. 24
C. 96
D. 720
Recent Answer : Added by Admin On 2022-09-23 19:21:59:
C. 96
Ques:- A train speeds past a pole in 15 seconds and a platform 100 m long in 25 seconds.What is Its length ?
Recent Answer : Added by Satwick On 2021-10-28 16:06:12:
Let’s say, length of train = x metres
Speed at pole = Speed at platform
x/15 = 100+x / 25
5x = 300 + 3x
2x = 300
x = 150m
So, train is 150 metres long.
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Ques:- Four couples sit around a circular table in a party. Every husband sits to the right of his wife. P, Q, R and S are husbands and T, U, V and W are wives. Q – U and R – V are two married couples. S does not sit next to V. T sits to the left of P, who sits opposite S. Q sits between ___.
Fathers before age=3*before sons age—-(1)
After 2.5 years..
Fathers before age+2.5 years =2.5*sons age—-(2)
Substitute (1) in (2),
3*sons before age+2.5 years=2.5*sons age
0.5*sons age=2.5 years
Sons before age=5years
So current age after 2.5 years,
Sons before age+2.5 =5+2.5=7.5 years