[WarriorDiplomat]

Originally Posted by Penn

But thats not the declarative statement, the declarative statements is:
A bat and Ball cost $1.10.

FIXing the price for the two at $1.10

The question reads as a direct single statement. The second statement declares the value of the bat and at a fix price of One (1) dollar.

Deductive reasoning as a property of subtraction, gets me to the fixed cost of the ball at .10C.

There is no suggestion to add the total cost for the bat and ball, which is fixed at $1.10, to the result of the deductive value of $1.10 +.10= $1.20. when the second declarative statement fixes the bat at 1.00 dollar.

Could the problem be flawed?

The second declarative statement does not assign the cost breakdown it simply states the bat cost 1$ more than the ball the first statement gives the combined cost if the ball cost .10 and you spent 1$ on the bat then the bat would only have cost .90 more than the ball.....the problem requires you to come up with a 1$ difference the only way to place the value difference is by splitting everything over 1$ by half and assigning the split to each product so that everything over the 1$ is cancelled out leaving the true difference in cost at 1$...the bat costing 1.05 the ball costing .05 the subtraction should be the cost of the ball subtracted from the cost of the bat leaving a difference of 1$