Search found 26 matches


DS-Number Properties : Need simple explanation to solve

If x is a positive integer, is x square – 1 divisible by 24?

(1) x is odd

(2) x leaves a remainder when divided by 3

OA:C

Question: Not able to understand on how to solve and need explanation for the same.
Experts please help.

by dhiren8182

Thu Aug 15, 2019 10:20 pm
Forum: GMAT Math
Topic: DS-Number Properties : Need simple explanation to solve
Replies: 1
Views: 3640

Want simple explanation for this PS question on Ratios

The ratio of two positive numbers is 3 to 4. If k is added to each number the new ratio will be 4 to 5, and the sum of the numbers will be 117. What is the value of k?
Ans Choices
1
13
14
18
21
OA 13
Not able to figure out on how my approach should be
Regards,
Dhiren

by dhiren8182

Sat Jan 17, 2015 7:28 pm
Forum: Problem Solving
Topic: Want simple explanation for this PS question on Ratios
Replies: 11
Views: 8202

Skeptical about OA .DS question from Veritas Prep

Dear Gurus, Please help me to understand the question and especially answer .This is from Veritas Prep. Will raise my doubt underneath where explanation is given. Question:Last Friday, a certain shop sold 3/4 of the sweaters in its inventory. Each sweater sold for $20. What was the total revenue las...

by dhiren8182

Fri Jan 16, 2015 1:20 am
Forum: Data Sufficiency
Topic: Skeptical about OA .DS question from Veritas Prep
Replies: 3
Views: 1513

PS Question on Time Rate and Distance-Not able to solve

Carlos can run a mile in 6 minutes. Kevin can run a mile in 8 minutes. If Kevin goes out to practice and starts 1 minute before Carlos starts on his practice run, will Carlos catch up with Kevin before he reaches the mile marker? (Assume a straight track and average speed.) A)3/2 mile B)2 mile C)1/2...

by dhiren8182

Sat Jan 10, 2015 12:06 am
Forum: Problem Solving
Topic: PS Question on Time Rate and Distance-Not able to solve
Replies: 3
Views: 2258

PS:Not able to derive final answer

Hi Guru(s),
If K is the sum of reciprocals of the consecutive integers from 43 to 48, inclusive, then K is closest in value to which of the following?

A. 1/12
B. 1/10
C. 1/8
D. 1/6
E. 1/4
OA is A
Not sure how to derive the final answer with approximation
Thanks
Dhiren

by dhiren8182

Mon Jan 05, 2015 10:09 pm
Forum: Problem Solving
Topic: PS:Not able to derive final answer
Replies: 4
Views: 5615

Not able to understand problem from Veritas Prep-Need Help

Hi Gurus, Here is a simple question (i may sound stupid) but i not able to comprehend properly.Especially the statement in bold.Would appreciate if any one can explain the solution in simple language. A trail mix company keeps costs down by employing the peanuts:cashews:almonds ratio of 10:4:1 in ea...

by dhiren8182

Sun Jan 04, 2015 12:41 am
Forum: Problem Solving
Topic: Not able to understand problem from Veritas Prep-Need Help
Replies: 5
Views: 2282

HI ,
how did you figured out about 10 b and 6g?
Thanks
Dhiren

by dhiren8182

Wed Jun 19, 2013 3:34 am
Forum: Problem Solving
Topic: Percent
Replies: 5
Views: 4299

Can we used the direct formula:

rates of r*rate of y/r+y
36*18/54=12 in 1 hr
so in 2 hrs 6 machines will be required.
Ans is C
Dhiren

by dhiren8182

Wed Mar 21, 2012 5:53 am
Forum: Problem Solving
Topic: GMAT Prep 1 #3_PS Rates Work #13
Replies: 6
Views: 1145

Hi, I solved in a way mentioned underneath. No fo stamps be x.So as per given information it's in ratio k/a= 5x/3x. Now,as per que stem; 5x-10/3x+10=7/5 solving this we get x=30. Now putting values in the above equation:5x-10/3x+10=7/5 we get kaye's no of stamps to be 140 and alberto's as 100 so to ...

by dhiren8182

Tue Mar 20, 2012 11:29 pm
Forum: Problem Solving
Topic: GMAT Prep 1 #3_PS Ratio #31
Replies: 4
Views: 946

Hi, I solved in a way mentioned underneath. No fo stamps be x.So as per given information it's in ratio k/a= 5x/3x. Now,as per que stem; 5x-10/3x+10=7/5 solving this we get x=30. Now putting values in the above equation:5x-10/3x+10=7/5 we get kaye's no of stamps to be 140 and alberto's as 100 so to ...

by dhiren8182

Tue Mar 20, 2012 11:29 pm
Forum: Problem Solving
Topic: GMAT Prep 1 #3_PS Ratio #31
Replies: 4
Views: 946

Hi Anurag,
How did u get ratio and first term for the same??

by dhiren8182

Sun Mar 11, 2012 11:16 pm
Forum: Problem Solving
Topic: GMATPrep Test 1 #2_PS Number Properties #3
Replies: 3
Views: 643

I solved in this way.
Profit=Sp-Cp
Given: SP=80
Let CP=x
so profit =0.25 x(given)
therfore 0.25x=80-x
therefore 1.25x=80
so x=20
answer is B

by dhiren8182

Sun Mar 11, 2012 10:11 pm
Forum: Problem Solving
Topic: GMATPrep Test 1 #2_PS Word Prob Basic #13
Replies: 2
Views: 665

I solved by formulae:
W1T1=W2T2
10*16=8*x
so x=20
therefore 20 hrs required to compelte job

by dhiren8182

Sun Mar 11, 2012 10:04 pm
Forum: Problem Solving
Topic: GMATPrep Test 1 #2_PS Rates Basic #21
Replies: 2
Views: 684

Que:w/x=x/y=y/z
w/x=x/y
so w=x^2/y
x/y=y/z
so z=y^2/x
therefore w/z=x^3/y^3
w/x=x^2.x/y.y^2
so w/x=w.x^2/z

by dhiren8182

Mon Mar 05, 2012 12:18 am
Forum: Problem Solving
Topic: fraction problem, seriously driving me bananas!
Replies: 9
Views: 1321

What About D?

Stem:Most parents make little use of baby clothing
Reasoning: Why ??Possibility that infants grow at a faster rate so parents do not get much use out of baby clothing.

by dhiren8182

Tue Feb 28, 2012 3:46 am
Forum: Critical Reasoning
Topic: Kaptest- Experts have a shot at this please
Replies: 12
Views: 1805