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?

Mathematics

2 answers:

lapo4ka [179]2 years ago

7 0

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

krek1111 [17]2 years ago

6 0

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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