Question

a baseball and a bat cost $1.10 and if this bat costs .10 cents more than the ball. how much did the ball cost?

Answer 1

Define x:
Let the cost of the ball be x.
Ball = x
Bat = x + 0.1

The total cost is $1.10:
x + x + 0.1 = 1.1
2x + 0.1 = 1.1
2x = 1
x = 0.5

Find the cost of the bat and the ball:
ball = x = $0.50
bat = x + 0.1 = 0.5 + 0.1 = $0.60

Answer: The ball cost $0.50