A percentage problem....please help

[Pinju]

Hi
Can anyone please solve this problem.

If the price of sugar falls by 75/2 %, a person can buy 33 kgs more for Rs.560.If the price had been risen by 75/2 %, how much sugar would he have bought for the same sum ?

1)36
2)40
c)42
d)39

Approach:
I think we can break 75/2 % as 3/8 and then take 5 - 8 -11
as the three ratios...Then how to proceed am not sure...
Please help

[GauravShah]

Originally Posted by Pinju

Hi
Can anyone please solve this problem.

If the price of sugar falls by 75/2 %, a person can buy 33 kgs more for Rs.560.If the price had been risen by 75/2 %, how much sugar would he have bought for the same sum ?

1)36
2)40
c)42
d)39

Approach:
I think we can break 75/2 % as 3/8 and then take 5 - 8 -11
as the three ratios...Then how to proceed am not sure...
Please help

Pls use any existing thread to post new problems.

Answer to this one...

Going by your approach.... Initial price = 8x, After reduction price = 5x

So (560/5x) - (560/8x) = 33

therefore (1/x)*(112-70) = 33

1/x = 33/42 .... or x = 42/33 = 14/11

So new price = 11*(14/11) = Rs.14

Amount of sugar = 560/14 = 40 Kgs i.e. Option (2)

HTH

Gaurav.

PS : Not req. but Kgs at Various cost

Rs. 5x - 88 Kgs
Rs. 8x - 55 Kgs
Rs.11x - 40 Kgs

[Govi]

Hey Pinju



Firstly, please use the search option before opening a new thread. There are plenty of threads on quant where u can post your problem.



The solution is same as given by Gaurav



PriceXQuantity = Expense

P X Q = 560

So, when price falls by 37.5 % and he can buy 33 kgs more it can be represented as

0.625 P X (Q+33) = 560


Solving the above two equations gives the original price and the quantity. The new can be found out by sub in

1.375P x Q = 560


Govi………..

[Govi]

Hey Sorry about the earlier reasoning

i found out my mistake

Govi

[Pinju]

Thanks a lot guys.
I found out the forum yesterday and it seems a nice one...
Will also contribute my best..

Thanks again

[Govi]

Hey Mods


Kindly lock this thread........ The purpose, i think is met

Well i dont know if this exists but when a new member joins, there must be a notification sent out to them especially on how to search threads and the rules for creating a new thread

Probably not as link in the welcome mail but a nice good description


Cheers


Govi...........