 
 <prompt> ``` 
One bar of steel dey weigh double the mass of one bar of tin. If one steel bar weigh 20 kgs pass one copper bar and one copper bar weigh 90 kgs, calculate the total weight of one container wey get 20 bars of each type of metal.
``` <response>: ```The total weight of 20 bars of copper na 20*90 = 1800kgs
If copper bar weigh 90 kgs, and steel bar weigh 20 kgs pass copper bar, the weight of steel bar na 90+20 = 110 kgs.
If bar of steel weigh 110 kgs, 20 bars go weigh 20*110 = 2200kgs
The total weight of 20 bars of copper and steel na 2200+1800 = 4000 kgs
A bar of steel weigh twice the mass of a bar of tin, meaning a bar of tin weigh 110/2 = 55 kgs
The total weight of 20 bars of tins na 55*20= 1100 kgs
The total weight of 20 bars of each metal na 4000+1100 = 5100 kgs

Answer na 5100.``` 