Question

the concert (start) on time if the performers (leave earlier from their studio what is the third conditionals​

Answer 1

The third condition of the given sentence is "The concert would have started on time If the performers had left earlier from the studio".

Explanation:  

• This is the third condition of a sentence.
• There are a total of three conditions: zero condition, first condition, the second condition, and third condition.
• In this condition the formula is If + present perfect + would have.

Answer 2

Answer:

• The third conditional sentence is : The concert would have started on time, if the performers had left earlier from their studio.

• Third Conditional is also called 'Impossible Conditional Sentence' because the action of if clause doesn't happen in reality.

• If clause contains past perfect tense and main clause takes would + have + past participle. Example : If they had won the match, they would have got through the final.