Problem on Numbers

[zango]

There are some chicken in a poultry. They are fed with corn. One sack of corn will come for 9 days. The farmer decides to sell some chicken and wanted to hold 12 chicken with him. He cuts the feed by 10% and sack of corn comes for 30 days. So initially how many chicken are there?

.9x - 30 days
1 x - 30*.9 days = 27 days for 12 chicken
= 9 days for t chicken
= 27 * 12 days for 1 chicken
= 27 * 12 / 9 days for t chicken
t = 27*12/9 = 36 chicken initially.

There is an element which triplicates in every hour. Each of these 3
items inturn reproduce exactly 3 other items. If a single compund is kept in a
container at noon and the container is full by midnight. After how many hours is the container 1/3 full.

9 pm.or 9 hours (1/3 becomes 3/3 in 3 hours - therefore 12-3 = 9) - not very sure - have to check.

100 Kg. Potatoes with 98% water content are dried in an oven. The percentage of water decreases to 50 %. What is the weight of potatoes now.

98 kg + 2kg of solid matter of water becomes 2 kg of water + 2 kg of solid matter (2 = 50% of 4) (assuming 50% of original weight - if it is 50% of the weight of water - then it will be 49kg water + 2kg solid = 51kg - but then the wording should have been "The percentage of water decreases by 50 %" )

There are n Railway stations. Ticket facility is 10available between every
two stations. Recently, m new stations are bulit so that 42 new tickets
are to be printed. How many stations were there? How many are newly
constructed.

For the m new stations you will need to print 42 new tickets = 21 new tickets one way.
Now, 21 = trains between 1 each of n stations and 1 of m stations = m*n + trains between each of the m new stations = mC2
21 = m*n+mC2 = m(2n + m-1)/2
3*7 = m(2n+m-1)/2
Taking m = 3
7 = (2n+3-1)/2
14 = 2n + 2
n = 6

If we take m = 7, (2n+6) = 6 => n = 0
Therefore, either there were no stations initially and 7 new stations were added or 6 originally, 3 new were added.

[THUSSU]

Originally Posted by koolfriend4u

There are some chicken in a poultry. They are fed with corn. One sack of corn will come for 9 days. The farmer decides to sell some chicken and wanted to hold 12 chicken with him. He cuts the feed by 10% and sack of corn comes for 30 days. So initially how many chicken are there?

There is an element which triplicates in every hour. Each of these 3
items inturn reproduce exactly 3 other items. If a single compund is kept in a
container at noon and the container is full by midnight. After how many hours is the container 1/3 full.

100 Kg. Potatoes with 98% water content are dried in an oven. The percentage of water decreases to 50 %. What is the weight of potatoes now.

There are n Railway stations. Ticket facility is 10available between every
two stations. Recently, m new stations are bulit so that 42 new tickets
are to be printed. How many stations were there? How many are newly
constructed.

36 chickens
11 pm
51 kg
there is a direct formula for this one...

[act_naturally1]

Originally Posted by koolfriend4u

There are some chicken in a poultry. They are fed with corn. One sack of corn will come for 9 days. The farmer decides to sell some chicken and wanted to hold 12 chicken with him. He cuts the feed by 10% and sack of corn comes for 30 days. So initially how many chicken are there?

There is an element which triplicates in every hour. Each of these 3
items inturn reproduce exactly 3 other items. If a single compund is kept in a
container at noon and the container is full by midnight. After how many hours is the container 1/3 full.

100 Kg. Potatoes with 98% water content are dried in an oven. The percentage of water decreases to 50 %. What is the weight of potatoes now.

There are n Railway stations. Ticket facility is 10available between every
two stations. Recently, m new stations are bulit so that 42 new tickets
are to be printed. How many stations were there? How many are newly
constructed.

ans2) 11:00
ans3) 2 kg

[zango]

Originally Posted by zango

9 pm.or 9 hours (1/3 becomes 3/3 in 3 hours - therefore 12-3 = 9) - not very sure - have to check.
originally, 3 new were added.

Ah messed up here : sorry - shud be 11 - not 9 - i read triplicates every 3hours - damn was held up at work - and was tired when i answered your Qs

your q's are fun to solve - keep them coming kool guy

[koolfriend4u]

yes zango. the ans. is 11 alone i think. wait 4 some time. i can post in eve alone. sorry 4 my delay.

[koolfriend4u]

[quote="zango"]

There are some chicken in a poultry. They are fed with corn. One sack of corn will come for 9 days. The farmer decides to sell some chicken and wanted to hold 12 chicken with him. He cuts the feed by 10% and sack of corn comes for 30 days. So initially how many chicken are there?

1(part)*9*x= 0.9(part)*12*30
therfore x=36 (chicks)

There is an element which triplicates in every hour. Each of these 3
items inturn reproduce exactly 3 other items. If a single compund is kept in a
container at noon and the container is full by midnight. After how many hours is the container 1/3 full.

(1/3 becomes 3/3 in 1 hr) - therefore 12-1 = 11 ==> 11pm.

There are n Railway stations. Ticket facility is available between every
two stations. Recently, m new stations are bulit so that 42 new tickets
are to be printed. How many stations were there? How many are newly
constructed.

Soln.

n(n-1) is the no. of tickets available between n no. of stations.

therefor n1(n1-1) - n(n-1) =42
9*8 - 6*5 =42.
n=6, n1 =9. 3 new stations.

Therefore, either there were no stations initially and 7 new stations were added or 6 originally, 3 new were added.

n stations were there. so u cant say n=0

[koolfriend4u]

1)A train and A Cyclist reaches a station every day at the same time. One day the Cyclist starts 20 minutes late from his house.On his way to station the train crosses him at 5 miles before
station.The speed of cyclist is 12mph. Find the speed of the train.

2)there were 50 players playing a game among themselves. each player is out of the game when lose 3 matches. what is the number of matches should be played in order to get the winner.

[koolfriend4u]

Two men are going along a track rail in the opposite direction. One goods train crossed the first person in 20 sec. After 10 min the train crossed the other person who is comming in opposite direction in 18 sec .After the train has passed, when thetwo persons will meet?

[zango]

Originally Posted by koolfriend4u

n stations were there. so u cant say n=0

You can - unless the question says n is not = 0

[koolfriend4u]

Originally Posted by zango

You can - unless the question says n is not = 0

well if n=0 , then they wont mention tht stations were thr & moreover tickets were available in between stations.

wats ur reply zango?