Please resolve this

rary Math (28017) 1.1 and 1.5 Rachel works two different jobs. She is paid $15 per hour as a caretaker for a senior citizen and $8 per hour as a dog walker. Last week she worked a total of 21 hours and earned a total of $280. How many hours did she work at each job that week? Show the calculations/thought process that lead to your final answer. hp