Answer:
11
Step-by-step explanation:
apply pythagoras theorem
Here's what I did and I checked it So it is correct!!


25% is your answer.

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I hope that helps you!! Any more questions please feel free to ask!!
(a)
we are given
the price of apple suddenly up by $0.75
Let's assume original price be 'p'
we are given
Sam bought 3 pounds of apple at the new price total is $5.88
so, new price = old price +0.75
price of 3 apples 
we are given that price is 5.88
so, we get equation as
.......Answer
(b)
Since, original price is p
so, we have to solve for p




so, original price is $1.21 per pound........Answer