When using variables, and the whole question is full of variables. The letters can stand for anything.
Answer:
1680 is correct answer
Step-by-step explanation:
600
×2.80
----------
1680
----------
1680 gas used in the trip
The foctor of 40 I this = 1,2,4,5,8,40
The equation is 138=300-3x
now solve by first subtracting 300 from each side: -162=-3x
divide each side by -3: x=54
The wise man is 54 years old
