The unit rate would be 1 3/7 ÷ 2/3 10/7 ÷ 2/3 10/7 · 3/2 separate<span> by </span>division<span>, </span>rearrange<span> and multiply 15/7 
Charlies reads</span><span> 15/7, or 2 1/7, page per </span>minute.
Hope this helps a bit.
        
             
        
        
        
Answer:
 2 pounds of coffee costing $4 should be mixed with 3 pounds of coffee costing 4.50 a pound to obtain a mixture costing $4.30 a pound.
Step-by-step explanation:
Given that coffee costing $4 a pound mixed with 3 pounds of coffee costing $4.50 a pound . we have to find the number of pounds of coffee mixed with 3 pounds of coffee costing $4.50 a pound to obtain a mixture costing $4.30 a pound.
Let x be the pounds of coffee mixed.
Cost of coffee of 3 pounds costing $4.50 a pound is 3(4.50)=$13.5
Total weight of mixture=x+3
The cost per pound of the mixture will be the total value of the coffee in the mixture divided by the total weight of the mixture which is 4x+13.5 divided by total weight 3 + x. 
∴ A/Q the equation becomes

⇒ 4x+13.5=4.30(3)+4.3x
⇒ 0.6=0.3x
⇒ x=2
Hence, 2 pounds of coffee costing $4 should be mixed with 3 pounds of coffee costing 4.50 a pound to obtain a mixture costing $4.30 a pound.
 
        
             
        
        
        
Answer: 46
Step-by-step explanation:
 
        
             
        
        
        
Answer: 4
-5+4=-1
-1+4=3
3+4=7
I hope this is good enough:
 
        
             
        
        
        
Answer:
x = 70/9
Step-by-step explanation: