Afarmer is planting a straight row of crops with 3 feet between each plant is 23 are planted what is the distance between the first and last plant

Answer
66 feet

Explanation
23 plants have been planted and the distance between one plant and the other is 3 feet. 
The number of spaces between the plants is;

23 - 1 = 22

Each space is 3 feet. 

The distance between the first and the last plant is;

3 × 22 = 66

Try d cause last i guessed that and it was right