Is (a+b) a multiple of 7 ? St1] a is not divisible by 7. Insuff. If both are multiples of 7 then the answer is yes. If both are non-multiples of 7 then the answer could be no. e.g. 5 & 12 St2] a-b is divisible by 7 Insuff. Again the same as above holds good Together. If both 'a' & (a-b) are ...

nysnowboard wrote:Payment: One crisp, new Bgmat thank you!

@Fiver as Hrasha said we can not apply odd or even concept to rational numbers so 1/5 is out of the window . Hi, only integers have the qualities "odd" and "even"... so if we're told that a number is even, it's automatically an integer. Hi Rockeyb & Stuart, thanks for your r...

Can we assume that J and B are integers ? Lets say J = B = 12 mins = 1/5 hrs (I am still considering J and B = even ) so lets put this in to your calculation : Good point. Did not think about this possibility; however on second thoughts, the question says that ' Jane can paint the wall in J hours, ...

OA is A. But, IMO, we do not need statement 1 or 2 to answer this question. from question itself: 12p+12 = 14p. so p=6. so number of chips gamblr had before winning = 12p = 72. [p->piles] I made the same assumption when i first attempted this problem. We are assuming that the number of piles is con...

I suggest taking a logical approach. We are asked the range of a variable 'd', hence it is best to identify the max or the min value of d. Given c<4. This means that 'c' can take a value miniscule away from 4. So to take 4 as the ending point of c will make sense. 3*4 = -6d d = -2 when 'c' is just o...

Agree with A.
Here's another approach:

10 extra contributed across the emptying time (et) is the same as what the filling rate (f) could do in 8 mins.
Hence 10 * et = 8 * f
et = 4/5 * f
Given et = f + 10
Hence (f + 10) * 4/5* f = 2400
(f+10) * f = 3000
60 * 50 = 3000
Hence f = 50