Astand was selling 8 mangos for $10 at a farmers market. keisha said,"that means we can write the ratio 10: 8 or $1.25 per mango. luis said,"i thought we had to write the ratio the other way 8: 10 or 0.8 mangos per dollar. who is correct and why? can we write more than on ratio for this situation?

Keisha  is right.No, only 1 ratio works

Step-by-step explanation:

You want the units to be dollars / mango. You have 10 dollars. How many mangos can you buy and at what price. They are selling mangoes for more than a dollar each. The answer should be $1.25 per mango. Think of it this way:If the cost of a mango was $1.00 you would be able to get 10 of them. Do you agree? Since you can only get 8, they must be more than a dollar each.The ratio can only be written in one way. 10/8 = 1.25

Answer

Keisha  is right.No, only 1 ratio works