12000 TK
Let the amount of each part-time be Tk “p” so the amount of each full-time received = 2p total amounts of part-timer and full-timer are 2p and (4 x 2p) or 8p respectively.
2p + 8p = 60,000
p = 6,000
So, each full-timer received = 2 x 6,000 = 12,000 Tk.
TK 1800
Let profit from each marker be = 1 Tk
Let profit from each pencil be =$\frac{1}{3}$ Tk
So, Profit from 12 market = 12 x 1 = 12 Tk
Profit from 18 pencil = 18 x $\frac{1}{3}$ = 6 Tk
Ratio of profit of marker & pencil = 12 : 6 = 2 : 1
Profit from pen per month = (900 x 2) = 1,800 Tk
6 gm gold to be mixed.
Given, Gold : Silver = 4:3
Amount of Gold = $\frac{4}{4+3}x42$ = 24 gm
Amount of silver = 42-24 = 18gm
Assume, if x gm Gold will be mixed then the ration will be 5 : 3
(Gold + x) : (silver) = 5 :3
=> $\frac{24+x}{18}= \frac{5}{3}$
=> x = 6
