Answered

agasoline tank of acar 5/8 full.after using 18 liters,it was only 2/5 full. wtha is the full capacity of the tank?

Sagot :

Let x = full capacity of the tank

5 (x) - 18 = 2 (x)
8                  5

5 x - 2 x = 18
 8     5

(5) 5 x  - (8) 2 x = (18) (5) (8)
      8             5
25x - 16x =  720
9x = 720
9        9

x = 80

The full tank capacity is 80 liters