Mary's age is 10 years less than 2 times Joe's age. If the difference between their ages is 30, how old is Mary?
2 answers:
Answer:
m=mary age
j=joe age
m=2j-10
m-j=30
rewrite
m=2j-10
m=j+30
so that means that
2j-10=j+30
-j
j-10=30
+10
j=40 so lets plug this in
m=2(40)-10
m=70
Hope This Helps!!!
Answer:
its 5
Step-by-step explanation:
cause 2 divided by 30is 15 minus 10 its 5
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Step-by-step explanation:
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