Search found 32 matches
Sorry to bother. I just realised my imbecility. :( Instead of work, i was trying match up the 4 times to rate. Corrected in the below now. :) I'm usually good with rate problems, this one has got me confused. How do I set this up? I'm comfortable with the pie method or the chart method. Thanks in ad...
- by LeoBen
Tue Feb 14, 2012 4:13 pm- Forum: Problem Solving
- Topic: rate problem
- Replies: 4
- Views: 1356
I'm usually good with rate problems, this one has got me confused. How do I set this up? I'm comfortable with the pie method or the chart method. Thanks in advance for the help. Caroline's and Carl's Cupcakes receive an order for a certain number of cupcakes. Caroline takes eight hours to complete ...
- by LeoBen
Tue Feb 14, 2012 3:44 pm- Forum: Problem Solving
- Topic: rate problem
- Replies: 4
- Views: 1356
good one pemdas.
perhaps you should have been more wicked -- by adding an answer choice such as 21!/7!(3!)^7 :twisted:
Cheers,
LB
- by LeoBen
Sat Feb 04, 2012 5:47 am- Forum: Problem Solving
- Topic: post mails
- Replies: 13
- Views: 2663
ratio = 2:3:4:5:6 lets consider the multiple as 1 -- bcz the answer needs ratio itself. total quantity = 2+3+4+5+6 = 20. capacity = 5/2 (quantity) = 5/2 x 20 = 50. capacity per glass = 50/5 (as each of the 5 glasses has equal capacity) = 10 question hence = no. of glasses >= half of 10 full i.e. >=5...
- by LeoBen
Thu Jan 26, 2012 12:53 pm- Forum: Problem Solving
- Topic: Ratio and Proportion
- Replies: 3
- Views: 1492
Tokens and ways
There are 100 tokens numbered from 1 to 100. In how many ways can two tokens be drawn simultaneously so that their sum is more than 100? 4950 5050 2500 2550 5000 I got the above Problem on the daily problems. I wasn't able to construe the explanation in the link. So I thought to post a new thread. W...
- by LeoBen
Sat Jan 21, 2012 2:03 pm- Forum: Problem Solving
- Topic: Tokens and ways
- Replies: 2
- Views: 1309
The World Wildlife Fund has declared that global warming, a phenomenon most scientists agree to be caused by human beings in burning fossil fuels , will create havoc among migratory birds by altering the environment in ways harmful to their habitats. (A) a phenomenon most scientists agree to be caus...
- by LeoBen
Sat Jan 21, 2012 8:26 am- Forum: Sentence Correction
- Topic: have no idea about this one OG12 #118
- Replies: 2
- Views: 2146
is a > c? 1. b > d ==> no clue on a or c given --so insuff 2. ab^2 - b > b^2 c - d ==> no clue of b & d -- so insuff eliminated AD, B. contest for C ab^2 - b > b^2 c - d ==> rearrange b sq to left and b to right -- ab^2 - b^2c > b - d b^2 (a-c) > b - d now we know b > d hence right is + ve. Ther...
- by LeoBen
Mon Jan 16, 2012 1:24 pm- Forum: Data Sufficiency
- Topic: Is a > c?
- Replies: 4
- Views: 1380
Does the below make sense -- though it yields the same answer I am not sure whether my logic is correct. p(neither together) = 1 - p(both with their mates) solving positive event. consider couples as unit -- AA BB S there are 3! ways of arranging the above 2!^2 ways between the couple 3 ways in whic...
- by LeoBen
Sun Jan 15, 2012 12:19 pm- Forum: Problem Solving
- Topic: Couples - Probability
- Replies: 6
- Views: 2989
Thanks for saying "small" when it was indeed stupid [in my defence: i was running short of time in cat ]ArunangsuSahu wrote:Small mistake by You
Wednesday=1st, 8th,15th,22nd
So 3
- by LeoBen
Sat Jan 14, 2012 11:09 am- Forum: Problem Solving
- Topic: Marina & her croissants
- Replies: 2
- Views: 1325
Marina & her croissants
Every Monday, Marina eats one croissant and every Tuesday she eats two croissants. On each subsequent day of the week, she eats a number of croissants equal to the sum of the croissants eaten on the two previous days, with the exception that if she eats more than four croissants on any particular da...
- by LeoBen
Sat Jan 14, 2012 10:51 am- Forum: Problem Solving
- Topic: Marina & her croissants
- Replies: 2
- Views: 1325
Slot method
Car 1 X 2 X 3 = _ X _ X _
so 8 X 6 X 4.
The above can be arranged in 3! ways, hence reduces the no. of ways --> 8X6X4/3! = 32
- by LeoBen
Tue Jan 10, 2012 5:37 am- Forum: Problem Solving
- Topic: 3 cars selection
- Replies: 7
- Views: 2050
variables, i is income, s is saving, o is spending Matrix for info -------Year 1-----Year 2 Save----s ----------0 Spend---o --------s(1+r) Income--i-----------0 wat's asked = s/i year 1: i = s + o year 2: i = 0 + s(1+r) => given spending year 2 = saving of year 1 (1+r) give => spending of year 1 = t...
- by LeoBen
Sun Jan 08, 2012 12:45 pm- Forum: Problem Solving
- Topic: OG12-ps-qn-163
- Replies: 4
- Views: 2325
Oh yes - my mistake. Ofcourse order doesnt matter, so RB or BR its just the same as per the stem i missed it I guess.
Thanks Pemdas
- by LeoBen
Fri Jan 06, 2012 12:02 am- Forum: Problem Solving
- Topic: Chemicals color coding system
- Replies: 3
- Views: 4539
Chemicals color coding system
In a certain lab, chemicals are identified by a color coding system. There are 20 different chemicals. Each is coded with either a single color or a unique two color combination. If the order of colors in the pairs doesnt matter, what is the miniumum number of different colors needed to code all 20 ...
- by LeoBen
Wed Jan 04, 2012 4:28 pm- Forum: Problem Solving
- Topic: Chemicals color coding system
- Replies: 3
- Views: 4539
faster m/c rate = k/4
slower m/c rate = k/8
slower on the critical path, with total time, faster would be 8/12 x 100 % = 66.66 %
- by LeoBen
Wed Jan 04, 2012 6:22 am- Forum: Problem Solving
- Topic: Machine work
- Replies: 5
- Views: 1638