A bakery sells muffins to local grocery stores in boxes that hold 20 muffins each. How many
boxes are used if 60 muffins are sold? 600 muffins?
5,000 muffins? Solve this problem any way you choose​

3 boxes, 30 boxes, 2,500 boxes

Step-by-step explanation: If each box holds 20 muffins, and 20*3=60, 20*30=600, 20*2,500=5,000

1200

Step-by-step explanation:

c. (3,2,6) is the answer.

let x and 400 - x be the two numbers.  

==> 0.80x + 0.85(400 - x) = 400 - 68 from the statement of the problem.  

< ==> 0.80x + 0.85(400 - x) = 400 - 68  

==> 340 - 0.05x = 332  

< ==> -0.05x = -8 ==> x = 160, the first number ==> 400 - x = 240, the second number.