# A spice mixture is 25% thyme. How many grams of thyme must be added to 12 g of the mixture to increase the thyme content to 40%?

##### 1 Answer

Feb 25, 2017

We must add

#### Explanation:

As spice mixture is

we have

If we add

we have

but this should be

Hence

i.e.

or

or

i.e.

Hence, we must add

then we have