Answered

At Westonci.ca, we make it easy for you to get the answers you need from a community of knowledgeable individuals. Discover reliable solutions to your questions from a wide network of experts on our comprehensive Q&A platform. Connect with a community of professionals ready to provide precise solutions to your questions quickly and accurately.

the ages of John and Mary total 27 years. Mary's age plus twice john's age is 40. how old is each person?

Sagot :

[tex]J+M=27[/tex]
[tex]2J+M=40[/tex]

[tex]J=27-M[/tex]

[tex]2(27-M)+M=40[/tex]
[tex]54-2M+M=40[/tex]
[tex]54-M=40[/tex]
[tex]-M=-14[/tex]
[tex]M=14[/tex]

[tex]2J+14=40[/tex]
[tex]2J=26[/tex]
[tex]J=13[/tex]

John is 13 years old
Mary is 14 years old

apologiabiology
so
Jon's age=j
mary age=m


m+j=27
m+2 times j=40
m+2j=40
M+j=27
ssubtract j from both sides
m=27-j
subsitute 27-j for m
27-j+2j=40
27+j=40
subtract 27 fromboth sdies
j=13

subsitue
13+m=27
subtract 13
m=14

mary=14
john=13
Thank you for your visit. We're dedicated to helping you find the information you need, whenever you need it. Thanks for stopping by. We strive to provide the best answers for all your questions. See you again soon. Thank you for visiting Westonci.ca. Stay informed by coming back for more detailed answers.