Jane is 3 years older than mary, and mary is twice as old as kay. if kay is x years old, how old is jane?
2 answers:
Answer:
2x +3 years old is Jane
Step-by-step explanation:
As per the statement:
If Kay is x years old.
Mary is twice as old as Kay.
then;
Mary = 2x years old
It is also given that Jane is 3 years older than mary
⇒ Jane = 2x + 3
Therefore, 2x +3 years old is Jane
The answer is y = 2x + 3.
x - Kay's age
y - Jane's age
m - Mary's age
<span>Jane is 3 years older than Mary: y = m + 3
</span><span>Mary is twice as old as Kay: m = 2x
</span><span>
y = m + 3
m = 2x
Substitute m in the first equation:
y = 2x + 3
</span>
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Hope it helped :)
