Answer: Next time please try to put clear images
Let he worked for x days and absent for (20-x) days.
So, according to question, he gets 60 rs for each working day and -5 for each absent days.
SO for working days he earns 60x and for absent he gave fines of (20-x)* (-5),
So, the equation will be
60x+ (20-x)*(-5)=745
60x-100+5x=745
65x-100=745
65x=845
x=845/65=13.
So, He worked only for 13 days, Now we need to calculate the number of days he was absent, so it will be 20–13=7 days.
The answer will be 7 days.