Answer:
John earned more in per hour by 30 cents
Step-by-step explanation:
First you need to find how much david makes an hour. Divide 57.60 by 8 this gets you $7.20 an hour. Now figure out how much John earned an hour. Divide 90 by 12 this will get you $7.50. Subtract 7.50 by 7.20 John earns 30 cents
Divide both earnings by how much they both worked.
David: 57.60 / 8 = $7.20 per hour.
John: 90 / 12 = $7.50 per hour.
John earns 0.30 cents more than David hourly.
Hope This Helped! Good Luck!
