Extra points reward!
find the value of the variables:
mamc = 70

y = 15

Step-by-step explanation:

m∠AMB and m∠BMC are equal to m∠AMC

So you set it up like this:

 (y) + (3y + 10) = 70

          4y + 10 = 70

                - 10  - 10

                 4y = 60

                 y = 15

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.