VeritasKarishma wrote:
PierTotti17 wrote:
Could someone explain the flaw in this approach please:
RateWomen x Time = Work Done
Rw X d = 1
Rw = 1/d
(w+n)*1/d x T = 1
(w+n)/d x T = 1
T = d/w+n
I am getting Ans. D
:/
w women take d days to complete 1 work. What is Rw here? Rate of work of 1 woman or w women?
Or is it R*w (R the rate of each woman and w the number of women?)
If that were the case, R = 1/dw (Rate of each woman)
(w + n)*(1/dw) * Time = 1
Time = dw/(w + n)
Answer (A)
Alternatively, one could
plug in numbers:
I say, n = 0. So the work will be done by w+n women in d days. Plugging n = 0 in options, only (A) and (E) give us d.
Next, say 1 woman completes the work in 1 day. 2 women (n = 1) will do it in 1/2 day. Plugging in options (A) and (E), only option (A) gives 1/2
Answer (A)
Hi VeritasKarishma,
w women take d days to complete 1 work. What is Rw here? Rate of work of 1 woman or w women?
Or is it R*w (R the rate of each woman and w the number of women?)
If that were the case, R = 1/dw (Rate of each woman)
In my mind, I am doing: Rate of Women x Time = Work
I guess my mistake is that I need to take into consideration the INDIVIDUAL work done by each woman. It's just confusing in my head because the question stem says: "if w women do a job in d days.." doesn't that imply that the Rate is of the collective women? Not sure why we have to take each individual one.
But thank you for the reply! This is something I would 100% get wrong on the test due to some confusing wording.