Homework Help Forum: math

Posted by asha on Monday, September 22, 2008 at 9:19pm.

a local hardware store has a 10-gallon can of gray paint left over that is a mixture of 35% black paint and 65% white paint. how many gallons of white paint will be needed to make the gray mixture 20% black? note: answers must be 5 gallons, 7.5 gallons, 12 gallons, or 17.5 gallons.

• math - bobpursley, Monday, September 22, 2008 at 9:25pm

  Well, it it contains .35*10 gallons of black paint now, then black paint =.20*total .35*10=.20(10+w) right? solve for w

  
  

Answer this Question

First Name:
School Subject:
Answer: