Hello i am studying for a scholarship which I am due to take in 1 week. I am doing a few practice papers and I was wondering if anyone could work out the answer to this question

The Best Bakery sells triangular cakes at 39p and square buns 23p each. For her party, Helen

buys a total of 40 of these cakes and buns and spends £13.52.

How many of each did she buy?