Answer:
$1.25
Explanation:
Amy, Beth and Catherine bought the same amount of apples.
let s say this is x
Amy has x amount of apples
Beth has x amount of apples
Catherine has x amount of apples
Catherine gave same amount of apples to Amy and Beth
let s say this is y
Amy has x + y amount of apples
Beth has x + y amount of apples
Catherine has x - 2y amount of apples
Catherine has 15 less than Amy so x-2y=x+y-15
Catherine has 15 less than Beth so x-2y=x+y-15
so finally, it comes x-2y=x+y-15
so 3y=15 and then y =5
Catherine gave 5 lb to Amy and 5lb to Beth
Catherine receives $12.5 from both of them
it means that 10lb costs $12.5 so the price for each lb is $1.25
thanks