<span>Derive two simultaneous equations a + o = 5 and 3a + 2o = 12 </span> <span>make a = 5 - o substitute in 2nd equation and you find o = 3, </span> when you put that back into the first equation you will see she <span>buys two apples.
I hope my answer has come to your help. Thank you for posting your question here in Brainly.