A bat and a ball together cost 1.10. The bat costs 1.00 more than the ball. How much does the ball cost?
Q1. A bat and a ball together cost 1.10. The bat costs 1.00 more than the ball. How much does the ball cost?
Answer: 0.05
Explanation: Let's denote the cost of the ball as x. Then, the bat costs x + 1.00. x + (x + 1.00) = 1.10, so 2x = 0.10, x = 0.05.