*$ab + bc$*$= 130$

*$bc + ca$*$= 168$

*$ca + ab$*$= 228$

Find the value of $a + b + c$ from the given set of equations

- Thu Dec 22, 2016 12:01 am
- Forum: Algebra
- Topic: Blended with equations
- Replies:
**1** - Views:
**351**

Find the value of $a + b + c$ from the given set of equations

- Wed Dec 21, 2016 11:45 pm
- Forum: Number Theory
- Topic: Stuck! Pls help quick
- Replies:
**2** - Views:
**527**

The LCM of two numbers is $7$ times of their GCD. If the sum of numbers is $392$, then find out their GCD.

- Fri Feb 05, 2016 11:11 pm
- Forum: Primary Level
- Topic: Divisional Math Olympiad, Dhaka-2016,primary, ques. 7
- Replies:
**10** - Views:
**2579**

I didn't understand why are we taking $99$ to prove the problem

- Sat Jan 30, 2016 9:30 pm
- Forum: Primary Level
- Topic: Divisional Math Olympiad, Dhaka-2016,primary, ques. 7
- Replies:
**10** - Views:
**2579**

I am not able to solve the question. Please help me soon! x is a two-digit positive number and y is a three digit positive number The values of x and y is such that if x is added by y % and if y is subtracted by x %, the result will be the same How many numbers can be replaced with x or y such that...

- Fri Jan 29, 2016 10:21 pm
- Forum: National Math Olympiad (BdMO)
- Topic: Math Problem 1
- Replies:
**2** - Views:
**940**

Here is my solution: The average mark of the students is $70$ the total obtained marks will be $70*2=140$, since AVERAGE = SUM OF THE QUANTITY$/$NUMBER OF QUANTITIES NOW, given that the number of student is $20$, we can take that, number of students scoring $ < 60 = 10$ number of students scoring $...

- Thu Jan 28, 2016 10:01 pm
- Forum: Primary Level
- Topic: Any Primary Category student?
- Replies:
**5** - Views:
**2387**

Well it is better not to try anything catchy but I **am** a primary category student!!!

- Sat Feb 07, 2015 10:23 pm
- Forum: Primary Level
- Topic: help!
- Replies:
**12** - Views:
**1989**

can't anyone find the answer i cannot do it so i posted it.

N:B:logic and reason must be given.

N:B:logic and reason must be given.

- Wed Feb 04, 2015 11:04 pm
- Forum: National Math Olympiad (BdMO)
- Topic: BdMO National Primary 2011/4
- Replies:
**4** - Views:
**1343**

thank you

- Sat Jan 31, 2015 9:57 pm
- Forum: Primary Level
- Topic: FIND THE NEXT THREE TERM
- Replies:
**4** - Views:
**1743**

i do not understand

- Sat Jan 31, 2015 9:35 pm
- Forum: Primary Level
- Topic: A problem to solve
- Replies:
**10** - Views:
**4203**

but it is simple to me.tanmoy wrote:BigBadWolf wrote:Solution is nice and simply but the way you managed to solve it Tanmoy is definitely not for kids. I showed this to my younger sister and well...it ended up with her slamming the door at calling me a doofus