Interested to Buy Any Domain ? << Click Here >> for more details...
2 men at same tym start walking towards each other from A n
B 72 kms apart. sp of A is 4kmph.Sp of B is 2 kmph in 1st
hr,2.5 in 2nd, 3 in rd. n so on…when will they meet i in 7
hrs ii at 35 kms from A iii in 10 hrs iv midway
- 7 Answers
- 24947 Views
- Cap Gemini, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / somy
midway.
72/2 = 36kms.....the distance midway
A to cover 36 takes 9hrs (9*4)
B in 9 hrs cover 36 also (2+2.5+....+6 = 36)
hence midway
| Is This Answer Correct ? | 122 Yes | 5 No |
Answer / rana
Distance covered by A in 9hours= 9*4=36kms
Distance covered by B in 9 hours=
(2.5+3+3.5+4+4.5+5+5.5+6)=36kms
so A,B meet in the midway i.e 72/2=36kms
Tank you
| Is This Answer Correct ? | 46 Yes | 4 No |
Answer / deepak
After the first hour, they are
4+2=6 km closer to each other. After the second hour, they are
4+2.5=6.5 km closer to each other, and so on. The reduction of distance per hour is therefore an arithmetic progression:
6, 6.5, 7, ...
with initial value a=6 and common difference d=0.5.
The arithmetic series (adding these distances) can be expressed in terms of hours, h, as
S(h) = ah + dh(h-1)/2
= 6h + 0.5(h^2-h)/2
= 6h + (h^2-h)/4
and they meet when this sum equals 72:
6h + (h^2-h)/4 = 72
24h + h^2 - h = 288
h^2 + 23h - 288 = 0
(h - 9) (h + 32) = 0
We have no interest in a negative solution, so the positive one h=9 is the one we want. They meet after 9 hours.
That doesn't match either of the answers that are times, so let's check the distance from A, which at a steady 4 km/h is clearly 36km, half the total distance.
They meet midway (answer iv).
| Is This Answer Correct ? | 7 Yes | 4 No |
Answer / dinesh
after 8 hours
because after 8 hours A has traveled 32 km,
and B has travelde 30 km,
at that time the meet
| Is This Answer Correct ? | 17 Yes | 62 No |
Frank is 15 years younger then John. In 5 years John will be twice as old as Frank. How old will Frank be in four years?
Five people A ,B ,C ,D ,E are related to each other. Four of them make one true statement each as follows. (i) B is my father's brother. (ii) E is my mother-in-law. (iii)C is my son-in-law's brother (iv)A is my brother's wife.
Area if square increase by 69% find sides % increased by?
A sample of milk contains 5% water. What quantity of pure milk should be added to 10 litres of milk to reduce the water content to 2%? (a) 5 litres (b) 7 litres (c) 15 litres (d) 12 litres (e) None of these
two friends A,B are running up hill and then to get down! length if road is 440 yards A on his return journy met B goin up at 20 yards from top,A has finished the rase .5 Minuit earlier than B,then how much time A had taken to complete the rase.
20 people meet and shake hands. The maximum number of hand shakes possible if there is to be no ‘cycle’ of handshakes is( a cycle of handshake is a sequence of people a1,a2, …..ak)such that people(a1,a2),(a2,a3)…..(a(k-1),ak),(a2,a1) shake hand is
In a certain department store, which has four sizes of a specific shirt, there are 1/3 as many small shirts as medium shirts, and 1/2 as many large shirts as small shirts. If there are as many x-large shirts as large shirts, what percent of the shirts in the store are medium?
send me HPCL MODEL EXAM PAPER.... JAYAKER@GMAIL.COM THANK U
Fathers age is 5 times his son's age. 4 years back the father was 9 times older than son.Find the fathers' age.
write a five digit number , which will be having two prime numbers, and some two more conditions,like 1st digit greater than 2nd etc its easy(remember one is not a prime number,most people don mistake taking 1 as prime number)
Sam and Jessica are invited to a dance. If there are 7 men and 7 women in total for the dance and one woman and one man are chosen to lead the dance. What is the probability that Sam and Jessica will NOT be chosen to lead the dance
to travel 'm' miles the time is 'h' hours,then what is the time taken to travel M miles.
English 
