Search found 17 matches
there were no choices, just the equation I wrote above,
also...
the time period does it give preposition like:
1:1?
or should I put 1/2 of a year like in the first equation?
and well, it worked with the new equation, thanx:)
- by galit_d2d
Mon Apr 21, 2008 3:42 pm- Forum: Problem Solving
- Topic: interest problem
- Replies: 5
- Views: 1897
pascal's triangle and binomial theorem
hi, I was reading from the "counting, permutations and combinations" document which was published in this forum, and I don't underst the : pascal's triangle and binomial theorem, If anyone can explain me clearly once and for all, these two I will really appreaciate this... also, if there i...
- by galit_d2d
Mon Apr 21, 2008 12:53 am- Forum: GMAT Math
- Topic: pascal's triangle and binomial theorem
- Replies: 1
- Views: 4716
- by galit_d2d
Mon Apr 21, 2008 12:47 am- Forum: Problem Solving
- Topic: mixture problem
- Replies: 2
- Views: 1578
- by galit_d2d
Mon Apr 21, 2008 12:42 am- Forum: Problem Solving
- Topic: interest problem
- Replies: 5
- Views: 1897
interest problem
another problem brought from the math review a total of 1200$ is deposited in 2 semi annual accounts for one year. part at 5% and remainder at 10% . If 72$ was earned as interest How much was deposited at 5%? the equation is : 72=x*5*0.5/100 + (1200-x)*10*0.5/100 well, I understood this...but...afte...
- by galit_d2d
Sun Apr 20, 2008 2:57 pm- Forum: Problem Solving
- Topic: interest problem
- Replies: 5
- Views: 1897
mixture problem
hi, this problem is also from the math review material I downloaded here. the question is : how many ounces of a solution i.e. 30% salt must be added to a 50-ounce solution i.e. 10% salt so that the resulting sol is 20% salt . the solution(which I don't understand...) x= the added amount 500+30x=(x+...
- by galit_d2d
Sun Apr 20, 2008 2:25 pm- Forum: Problem Solving
- Topic: mixture problem
- Replies: 2
- Views: 1578
small theoretic problems
Hi I am studying now from the math review material which is published in this forum. but, I do have a lot of questions. these are small questions and that is why I didn't separated them. 1.does anyone can give me an example for the dividend = divisor*quotient+remainder ? 2. what is HCF and LCM (if i...
- by galit_d2d
Sun Apr 20, 2008 2:06 pm- Forum: Problem Solving
- Topic: small theoretic problems
- Replies: 1
- Views: 1294
- by galit_d2d
Sun Apr 20, 2008 1:54 pm- Forum: Problem Solving
- Topic: motion problem
- Replies: 4
- Views: 3141
motion problem
hi, I saw a problem in the math review document which is published in this forum. gloria leaves home for school, riding her bicycle at the rate of 12mph 20 min later after she leaves her mother sees gloria's eng paper on her bed and leaves to bring it to her. If her mother drives at 36mph how far mu...
- by galit_d2d
Sun Apr 20, 2008 10:42 am- Forum: Problem Solving
- Topic: motion problem
- Replies: 4
- Views: 3141
- by galit_d2d
Sun Apr 20, 2008 9:21 am- Forum: GMAT Math
- Topic: GMAT Math Review doc
- Replies: 15
- Views: 24731
can't download the file...and I really need a good explanation for combination and permutation...
*thank you, succeded downloading after all...
- by galit_d2d
Tue Apr 15, 2008 11:19 am- Forum: GMAT Math
- Topic: Counting, Permutations, Combinations Notes
- Replies: 1
- Views: 6696
thanx for the explanation:)
but well...I don't seem to get this after all...
I tried plugging into z and well it did work that way, I think;)
well the answer was correct...
- by galit_d2d
Sat Apr 12, 2008 5:19 am- Forum: Problem Solving
- Topic: percents question
- Replies: 6
- Views: 1902
percents question
hi, learning now the plugging in principle. but I don't understand where should I plug in first in percent questions like: if 80% of a certain number x is 50% of y and y is 20% of z then what is x in terms of z? 1.5z 2.3z 3.z/4 4.z/5 5.z/8 the answer is 5. in the book they plug in 100 for x, I do un...
- by galit_d2d
Sat Apr 12, 2008 12:57 am- Forum: Problem Solving
- Topic: percents question
- Replies: 6
- Views: 1902
- by galit_d2d
Sat Apr 12, 2008 12:51 am- Forum: Problem Solving
- Topic: compound interest
- Replies: 5
- Views: 5168
compound interest
hi, I am learning now from the princeton review book. I can't understand what is simple interest, compound interest and the diffrence between them both. there is an example in the book: Ms.Lopes doposits $100 in an account that pays 20% interest, compounded semiannually. How much money will there be...
- by galit_d2d
Fri Apr 11, 2008 11:31 pm- Forum: Problem Solving
- Topic: compound interest
- Replies: 5
- Views: 5168