adewale223 wrote:
Alternatively
Let rate of one man be x and that of one woman be y
12x + 16y = 1/5...........1
13x + 24y = 1/4.............2
y = 1/200, x = 1/100
Let days required for 7 men and 10 women do job be d
0.12 = 1/d
d = 8.3333
Answer C
Adewale Fasipe, quant instructor from Lagos Nigeria.
In the 2 equations, I tool RHS as 5 and 4 instead of 1/5 and 1/4, and ended up getting y<0.
But I'm not sure why did I do that?
adewale223, could you pls help.