A cell phone and phone case cost $110 in total. The cell phone costs $100 more than the phone case. How much was the cell phone?

A cell phone and phone case cost $110 in total. The cell phone costs $100 more than the phone case. How much was the cell phone?

#Puzzle_answer: A cell phone and phone case cost $110 in total. The cell phone costs $100 more than the phone case. How much was the cell phone?

or 

A baseball and a bat cost $110 if the bat costs $100 more than the ball, how much does the ball cost?

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Correct answer : 105$

 

Let us assume that the cost of phone case is x

Therefore, cost of phone is x+100

x+(X+100)=110

2x=10

x=5

Therefore,

Phone cost =5+100 =105

Phone cost is 105$

 

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