Algebra word problem

1.)Two cars starting at the same time travel from A to B 1000m apart.One car can travel 1000m in 130 seconds while the other car can travel the same distance in 120 seconds.How far behind the faster car is slower car when the faster car reached point B?

2.)Daniel bought a second hand betamaxx VCR and then sold it to Rudy at a profit of 40%.Rudy then sold the VCR to Dave at a profit of 20%.If Dave paid P2856 more than it cost to Daniel,how much did Daniel paid the unit?

3.) Yolanda spent $30.60 for walnuts and pecans.The walnuts cost $2.80 per pound and the pecans cost $3.20 per pound.If she has a total of 10 pounds of nuts,how many pounds of each does she have?

I want this 3 question to have solution not only the answer thank you