John works two jobs. as a security guard he earns $8.75 per hour. as a landscaper he earns $14.00 per hour. one week john worked a total of 30 hours and earned $283.50. how many hours did he work at each job?

Neoli is a nurse who works each day from 8: 00 am to 4: 00 pm at the blood collection centre. she takes 45 minutes for her lunch break. on average, it takes neoli 15 minutes to collect each sample and record the patient's details. on average, how many patients can neoli see each day?