alexacarillo
30.11.2020 •
Mathematics
The sum of Mary and Susan’s age is 61. Mary is fourteen less than twice as old as Susan. What are their ages?
Use M for Mary's age and S for Susan's age.
1st Equation ("sum of Mary and Susan's age is 61) M+S=61
2nd Equation ("Mary is fourteen less than twice as old as Susan.") M=
Mary's age is
.
Susan's age is
.
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Ответ:
The probability is .63 for A or B