Final answer:
Matthew earned twice plus $4 of what Jeremy earned, so his earnings are $62.50.
Step-by-step explanation:
To find out how much Jeremy earned, let's set up equations for each boy's earnings and solve them. Let x represent Jeremy's earnings. Matthew earned twice plus $4 of what Jeremy earned, so his earnings are 2x + 4. Don earned 3 times less than $10 than what Jeremy earned, so his earnings are 10 - 3x. We know the total earnings of the three boys is $264, so we can set up the equation x + (2x + 4) + (10 - 3x) = 264. Simplifying the equation gives us 4x + 14 = 264. Subtracting 14 from both sides gives us 4x = 250. Dividing both sides by 4 gives us x = 62.5. Therefore, Jeremy earned $62.50.