Dustin is mixing concrete. A formula for concrete calls for 3/8 gal of water. Dustin wants to make 7/9 more concrete than the formula creates.

How much water should Dustin use?

Express your answer as a fraction in simplest form.

Question

Dustin is mixing concrete. A formula for concrete calls for 3/8   gal of water. Dustin wants to make 7/9   more concrete than the formula creates.
 
How much water should Dustin use?
 
Express your answer as a fraction in simplest form.

ceedge6769 · Answer

@Nikki_Skellington

nikki_skellington · Answer

The answer is 2/3 because  if he wants to make 7/9 more concrete, he should use 7/9 more water.

so he should use 1 of the planed water plus 7/9 of the planned water, that is 9+7/9 or 16/9 of what the formula says.

so we multiply this by what the formula says and you should get 2/3