Sally pays $25 for two tube of paint a blue tube and red tube the blue tube cost $7 more than red tube how much did each tube cost

To solve this, let the red tube: x.

The blue tube: x+7, since it costs $7 more than the red tube.

Total amount spent: 25

x+x+7=25

Combine like terms.

2x+7=25

Subtract 7 from both sides.

2x=18

Divide both sides by 2.

x=9

The red tube costs $9.

We know that the blue tube costs $7 more than the red tube.

9+7=16

The blue tube costs $16.

I hope this helps :)