Question

mary is twice older than her sister .In 5 years time,she will be 2 years older than her sister. Find how old are they​

Answer 1

Answer:

the question is not right

Answer 2

Given:-

• Mary is twice older than her sister.
• In 5 yrs time , she will be 2 yrs lder than her sister.

To find:-

• How old they are now.

Solution:-

Let Mary's sister be ' x ' years old .

Then , Mary will be ' 2x ' years old .

After 5 years :

Mary's sister will be ' x+5 ' years old.

Mary will be '2x + 5' years old .

Given in the question that , Mary is twice older than her sister.

➥ Mary's age = Age of mary's sister + 2 years.

》 2x+5 = (x+5)+2

》 2x = x+7 - 5

》 2x=x+2

》 x=2.

Therefore,

❥ Age of Mary's sister = 2 years

❥ Age of Mary = 2x = 4 years .

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