It's the first one because the other three go pasted -6 which would make the problem not true.
<em>multiply both sides by 5 </em> 3(15k+10)=5(12k-9)
<em>get rid of the brackets</em> 45k+30=60k-45
<em>take away 45k to both sides</em> 30=15k-45
<em>plus 45 to both sides</em> 75=15k
<em>divide both by 15</em> k=5
You can set up rations to do this.
So we know that they accept 2:5.
So It would be 180: 450.
Cost of washer: $720
Cost of dryer: $240
I've taken this test before and got it right, so you're good :)
Water = 5 bottles * $0.90 = $4.50
meat = 8 pounds * x amount.
Total = water + meat prices = $26.90
26.90 = $4.50 + 8x
22.40 = 8x
2.8 = x
The price per pound of meat is $2.80.
