Boxes to mail

Leah has six boxes that she wants to mail. Five identical boxes weigh 3 and 7/8 pounds each. The last box weighs two times as much as one of the other packages. How many pounds do all six boxes weigh?

Correct answer:

m =  27 18 = 217/8 lb

Step-by-step explanation:

a=387=3+87=83 8+7=824+7=831=3.875 lb b=2 a=2 831=82 31=862=431=7.75 lb  m=5 a+b=5 831+431=8217 lb=2781 lb=27.125 lb

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