Posted by **Punkie** on Wednesday, December 16, 2009 at 10:37pm.

The two cereal boxes shown have corresponding edges in a ratio of 2:3. If the smaller box sells for $2.50 and the larger box for $4.00, which is the better buy? Why? What assumption(s) do you have to make when solving the problem? Estimate, then check.

Could someone show me how to solve this? I don't know what formulas to use.

- Math -
**lucy**, Wednesday, December 16, 2009 at 10:39pm
what is 1/2 - 1/2

Im doing modeling subtraction of fractions

- Math -
**Reiny**, Wednesday, December 16, 2009 at 10:42pm
hint:

The volumes of the two similar boxes are proportional to the cubes of their corresponding sides.

so the larger box:smaller box = 27:8

so the larger holds over 3 times as much as the smaller.

Now look at the cost.

## Answer this Question

## Related Questions

- math - The two cereal boxes shown have corresponding edges in a ratio of 2:3.If ...
- math - The two cereal boxes shown have corresponding edges in a ratio of 2 : 3. ...
- math - two cereal boxes have corresponding edges in a ratio of 2:3 If the ...
- maths - two rectangular boxes are each 9 inches tall both boxes have square ...
- physics - A person pulls with a force of 40 N on two boxes at rest. The top box ...
- physics - A person pulls with a force of 40 N on two boxes at rest. The top box ...
- physics - Two boxes are similar. The larger box has a volume that is 64 times ...
- math/geometry - Two boxes must be wrapped. Both boxes are right rectangular ...
- Physics - Two boxes on a horizontal surface, as shown in the figure above, are ...
- math - A certain brand of cereal costs $3.25 per box before sales tax is added. ...

More Related Questions