Jacqueline has two part time jobs . She earns 15 per hour working

at Job A and 12 per hour working at Job B. If she works 20 hours at Job A and 30 hours at Job B in one week, how much will she earn in total?

The total amount she earns from Job A is 20 hours * $15/hour = $<<20*15=300>>300.
The total amount she earns from Job B is 30 hours * $12/hour = $<<30*12=360>>360.
The total amount she earns in one week is $300 + $360 = $<<300+360=660>>660. Answer: \boxed{660}.