Seven persons – Tina, Pari, Antu, Reta, Menu, Usha and Asha took a test on different days of a week starting Monday to Sunday but not necessarily in the same order. Each of them scored different marks. 

Antu took the test on Wednesday and the marks scored by him is an odd number. The one who took the test on Friday scored four marks. Only twenty four marks in total were scored before Thursday. The marks scored by each of the persons who take the test on the first four days of the week are multiple of three. Only six marks were scored on Tuesday. Reta took the test on Saturday and she scored two marks less than Usha. Asha took the test before Tina. Maximum marks were scored on Monday. Usha took the test on Thursday. Pari scored twice the marks scored by Menu. The marks scored by Menu are one less than the marks scored by Antu. The marks scored by Usha were an even number.

How many marks were scored by the person who took the test two days before Usha?