Hi ppl require a solution to these toughies !!!

[anna_2682]

A, B, C, D went to a hotel and planned to share the bill equally. But afterwards they changed their plan and to pay proportional to consumption A paid 240, B & C paid equally, D paid only half the amount that he should have paid based on the first plan. What is the amount paid by B?

[jazztheroof]

i dont this q can b solved
lets say total bill is 4x in starting
so every one is supposed to pay ammount x
A B C D
x + x + x + x = 4x
240 + 2y + x/2 = 4x

b+c pays 2y as they pay equal
we can not solve it bc we hv 1 equation n 2 variables
we need total ammount which collectively they r suppose to pay or valur of x or value of y
if ny1 can solve this q plz do it

[jinxdjonx]

yeah...evn i think so...cnt b solved...u mst hv missed out on sm vital info...u need the total amnt..
pls check it out again..and luk for ne missin info...
bye

[anna_2682]

Hi ppl
I dint leave out ne info reg the prob but i think it requires lateral reasoning n trial n error kinda way to solve it.Dunno the answer though n seek one till eternity

Lotsa luck

[Jackal]

Originally Posted by jazztheroof

i dont this q can b solved
lets say total bill is 4x in starting
so every one is supposed to pay ammount x
A B C D
x + x + x + x = 4x
240 + 2y + x/2 = 4x

b+c pays 2y as they pay equal
we can not solve it bc we hv 1 equation n 2 variables
we need total ammount which collectively they r suppose to pay or valur of x or value of y
if ny1 can solve this q plz do it

we get an eq 7x-2y=480... which can have infinite sol... like (80,40) (90,75)........ etc

so data insufficient...

cheers
puneet

[pabby]

Well this can't be solved. Just back substitution from answer choices should get u the right answer.

[anna_2682]

hey ppl
Thnx for the solution ... now have a look at these new ones ...this time i will try hard to leave any incomplete info

A person join a job at 20 yrs.First 3 years sal =10,000 p.a. Afterwards every year inc of 2,000 per year for 10 year. Then sal become const till retirement. at retirement avg sal is 25,000. ( thro’out career) what age he retires.?

Diamond\’s value is proportional to its weight2 .When the diamond broke wts of pieces in ratio 1:2:3;4:5.Total loss in value is 85,000.What is the value of the diamond twice the wt of the original diamond.

Two trains are traveling at 18kmph and are 60 km apart. There is fly in the train. It flies at 80kmph. It flies and hits the second train and then it starts to oscillate
between the two trains. At one instance when the two trains collide it dies.
Distance traveled by the fly when both trains collide is?

Two cars are 500 cm apart. each is moving forward for 100 cm at a velocity of 50 cm/s and receding back for 50 cm at 25 cm/s at what time they will collide with each other?

Thnx ppl

[newguy]

Originally Posted by anna_2682

hey ppl
Thnx for the solution ... now have a look at these new ones ...this time i will try hard to leave any incomplete info

A person join a job at 20 yrs.First 3 years sal =10,000 p.a. Afterwards every year inc of 2,000 per year for 10 year. Then sal become const till retirement. at retirement avg sal is 25,000. ( thro’out career) what age he retires.?

Diamond\’s value is proportional to its weight2 .When the diamond broke wts of pieces in ratio 1:2:3;4:5.Total loss in value is 85,000.What is the value of the diamond twice the wt of the original diamond.

Two trains are traveling at 18kmph and are 60 km apart. There is fly in the train. It flies at 80kmph. It flies and hits the second train and then it starts to oscillate
between the two trains. At one instance when the two trains collide it dies.
Distance traveled by the fly when both trains collide is?

Two cars are 500 cm apart. each is moving forward for 100 cm at a velocity of 50 cm/s and receding back for 50 cm at 25 cm/s at what time they will collide with each other?

Thnx ppl

Answers to the questions

1) he got 10K for 13 years , 2k for 1 year . 4 k for 1 year.....20 k for 1 year and then 30K for , say, n years

so, (10X13 + ( 2+4+6+......+20) + 30Xn)/(n+13) = 25

=> n = 17 . hence, RETIREMENT AGE IS 20 + 13 + n = 50 YEARS

2 ) 450,000

let weight of the original diamond be 15k ( This number is the sum of the numbers in the ratio given ) ,so, it's value would be 225k^2. Now, the broken diamond's value adds upto 55k^2. So, loss of value is 170k^2 which is 85,000. This gives k^2 = 500.

We need (30k)^2 = 900k^2 = 900* 500 = 450,000

3) Dunno....I am getting some 400/3 kms as the answer..if that is the correct answer, i can explain how i got that..otherwise , it 's too boring to see that humongous solution

4 ) 14 seconds

[THUSSU]

Originally Posted by anna_2682

hey ppl
Two trains are traveling at 18kmph and are 60 km apart. There is fly in the train. It flies at 80kmph. It flies and hits the second train and then it starts to oscillate
between the two trains. At one instance when the two trains collide it dies.
Distance traveled by the fly when both trains collide is?

Two cars are 500 cm apart. each is moving forward for 100 cm at a velocity of 50 cm/s and receding back for 50 cm at 25 cm/s at what time they will collide with each other?

Thnx ppl

SIMBLE -
the trains will meet at 60/(18+1 or 5/3 hr
distance trAvelled by fly = 80 x 5/3 or 400/3 km

each car moves forward (then backward) for 2 sec; in 4 sec, they cover 50 cm each;
they will together cover 300 cm in 12 sec. then, a 100 cm thrust from both ewill ensure that they collide! this will happen after another 2 sec
thus, 14 secs.

[Debs]

Here is another ques with a variation to the ques posted by anna:
A boy, a girl and a dog are standing together on a long, straight road.
Simulataneously, they all start walking in the same direction:
The boy at 4 mph, the girl at 3 mph, and the dog trots back and forth
between them at 10 mph.
Assume all reversals of direction instantaneous.
In one hour, where is the dog and in which direction is he facing?