This bat and ball riddle reminded me of the riddle about the flu.

You read it and are a little confused.

But if you start with what you know, and take it step by step, it’s perfectly doable.

**Question**

A bat and a ball cost $ 1.10 in total.

The bat costs $ 1.00 more than the ball.

How much does the ball cost?

**Answer**

We have two equations with two unknowns:

Bat + Ball = $1.10

Ball + $1.00 = Bat

Therefore:

(Ball + $1.00) + Ball = $1.10

Now solve the equation for Ball:

(Ball + $1.00) + Ball = $1.10

Ball + Ball = $.10

2Ball = $.10

Ball = $.05

**The ball cost $.05.**

**The bat cost $1.05.**

**The bat and ball cost $ 1.10 in total.**

I discovered this question in *Mastermind*, By: Maria Konnikova.

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