249-9 (50 overs) beat
Australia women U21
174 all out (49.3 overs) by 75 runs
England women recorded their first victory on tour at the third attempt, beating Australia U21 by 75 runs.
After winning the toss, England used an opening stand of 134 between Sarah Taylor (56) and Beth Morgan (70) to reach 249-9 in Geelong.
Rosalie Birch took 3-21 as the hosts were bowled out for 174 in the final over of their reply.
"It's nice to have a good total to bowl at and our batters performed well to give me that," said Birch.
Morgan, who was named player of the match, said: "I'm obviously pleased with my performance but the overall victory is what's important.
"It's great to record a win before the Twenty20 on Friday against Australia at the MCG."
Pace bowler Katherine Brunt, meanwhile, is to join the squad in Australia, with a view to playing on the tour to New Zealand which follows.
Brunt has not played international cricket since 2006 because of back problems and underwent surgery last summer.
"She?s a fine bowler and more than capable batter as well as a fierce competitor. She really does add a lot to the squad," said England coach Mark Dobson.
"The chance to play in New Zealand is just reward for her efforts. I would be na´ve to think that she can play in every game on that leg of the tour - it?s important that we ease her back in gently.
"But, that said she is a very determined character who will want to play a full role."