Step-by-step explanation:
$20/hr carpenter pay
$25/hr blacksmith pay
 
Let c = hours working carpentry
Let b = hours working as blacksmith
 
c + b = 30 {equation 1}
20c + 25b = 690 {equation 2}
 
In equation 1 solve for one variable in terms of the other.
c = 30-b
Substitute that into equation 2:
 
20(30-b) + 25b = 690
600 - 20b + 25b = 690
5b = 90
b = 90/5
b = 18 hours working as a blacksmith
 
c = 30-b = 30-18 = 12 hours as a carpenter
 
        
             
        
        
        
26 would be the correct answer because 2/3 X 40 = 26.667 but you cant serve a little bit of soup so the total would be 26   Hoped this helped
        
                    
             
        
        
        
Answer:
45
Step-by-step explanation:
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How many different numbers can be made by multiplying 1 by some,all,or none of the prime numbers below?
2,5,5,7,7,7,11
the answer
only 1 answer will remain the same b/c one multiply by a number is just one
brainlest plz