Why is the answer to this question 5 cents and not 10 cents? “A bat and a ball cost $1.10 in total. The bat costs $1 more than the ball. How much does the ball cost?”

Question

Why is the answer to this question 5 cents and not 10 cents? “A bat and a ball cost $1.10 in total. The bat costs $1 more than the ball. How much does the ball cost?”

In: Mathematics

Answer 1

So: x = price of the bat , y = price of the ball, x+y=1.10 but also x=y+1.00.. so substituting x you have y + 1.00 + y = 1.10 meaning 2y = 0.10, thus y = 0.05.