A zoo has 12 toucans and 36 parrots. What is the ratio of the number of toucans to the number of parrots at the zoo

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?

If 20% of a number is 35, what is 50% of that number?

What is the perimeter of a rectangular building that is 80 feet wide and 140 feet deep?