The area of the rectangle shown is at most of 140 square cm

x would be equal to or less than 4. It would not be possible for it to have a length of 15 because 15x10=150 and the maximum area is 140 sq cm.

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

pls mark as brainliest.