Lookup function

[Lola232]

No of units. Price/unit. Method. R/ unit
1. 70. Ship 1
10. 60. Truck. 1.5
100. 50. Road. 2
200. 40. Rail. 2.5
500. 30. Air. 3
1000. 20

Sales table
Method. Units sold. Total cost
Ship. 2
Rail. 12
Road. 150
Air. 260
Truck. 580
Truck. 1010

Now my question is i may only use the LOOKUP function. And the question is.
What will the total cost be of produxts purchased for each method, having been giving the numbers in unit sold columm of sales table be? Please help.

 

[Lola232]

No of units. Price/unit. Method. R/ unit
1. 70. Ship. 1
10. 60. Truck. 1.5
100. 50. Road. 2
200. 40. Rail. 2.5
500. 30. Air. 3
1000. 20

Sales table
Method. Units sold. Total cost
Ship. 2
Rail. 12
Road. 150
Air. 260
Truck. 580
Truck. 1010

Now my question is i may only use the LOOKUP function. And the question is.
What will the total cost be of produxts purchased for each method, having been giving the numbers in unit sold columm of sales table be? Please help.

 

[Lola232]

Sory guys the 70,60,50 is under price/unit and the names is method and the 1,1.5,2,2.5 is under R/unit