Which is greater: 25% of 15 or 15% of 25? explain your reasoning using algerbreaic representations or visual models

Afruit stand has to decide what to charge for their produce. they need $10 for 4 apples and 4 oranges. they also need $15 for 6 apples and 6 oranges. we put this information into a system of linear equations. can we find a unique price for an apple and an orange?

What number is 7 units left of -15?

Ineed here’s a picture of the question