Ana and Marielle went to the grocery to buy cans of milk and sachets of coffee. Ana paid Php 672 for 12 cans of milk and 24 sachets of coffee. Marielle bought the same cans of milk and sachets of coffee but only paid less than Php 450. Suppose each sachet of coffee costs Php 5. 50. How many cans of milk and sachets of coffee could Marielle have bought?.