Question

Can someone plz help me solved this problem I need help plz help me! Will mark you as brainiest!

Answer 1

Answer:

4

4

Step-by-step explanation:

x litres of 15% solution + y litres of 19% solution= 8 gallons of 17% solution

disinfectant content of the final solution= 8*0.17= 1.36 gallons

0.15x+0.19y=1.36

x+y= 8 ⇒ x=8-y

• 0.15*(8-y)+0,19y= 1.36
• 1.2-0.15y+0.19y=1.36
• 0.04y=0.16
• y= 0.16/0.04
• y=4 gallons
• x= 8-4= 4 gallons