KALON AND HIS FRIEND CAN CLEAN A 20 FOOT CHIMNEY IN ONE 1 5/7 HOURS. kALON CAN CLEAN A CHIMNEY IN 4 HOURS. HOW LONG DOES IT TAKE MY FRIEND TO CLEAN A CHIMNY BY HIMSELF?

78.59 is the mean

step-by-step explanation:

to determine the unit cost your would divide the total cost by the number sold.

7 bagels for $4.41       $4.41/7 = $.63 each at fresh side

5 bagels for $3.60         $3.60/5 = $.72 each at value mart

on monday rodney ate 1/4th of the sandwich = 3/12

on tuesday he ate 1/3rd of the sandwich = 4/12

therefore in total he has eaten = 3/12 + 4/12 = 7/12

thus we can say that he has eaten 7/12 of the sandwich on monday and tuesday alltogether.

happy to

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