Total Loss for Jamal = $189
Explanation:
Starting per hour wage for Jamal = $9
number of working hours for Jamal = 8 per day
Total earning in a day = $9 x 8 = $ 72
Net earning in 21 days = $72 x 21 = $1512
Now, If he comes late by 15 minutes each day, the number of hours for which he is going to be paid = 7 hours
Hence earning made each day = $9 x 7 = $63
Earning made in 21 days = $63 x 21 = $1323
Total loss he has to bear = $1512-$1323= $189
The money Jamal is losing each month if he works 21 days in a month by coming late by 15 mins = $ 189