# 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 both now

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Let the mary's sister's age be x

Now , mary's age = 2x

Given that in 5 years time mary's age is x+2

⇒ x + 2 + 5 = 2x +5

⇒ x + 7 = 2x + 5

⇒2x - x = 7 - 5

⇒ x = 2

Therefore , Mary's age = 2x = 2 × 2 = 4

Mary's sister's age = x = 2 .

Now , mary's age = 2x

Given that in 5 years time mary's age is x+2

⇒ x + 2 + 5 = 2x +5

⇒ x + 7 = 2x + 5

⇒2x - x = 7 - 5

⇒ x = 2

Therefore , Mary's age = 2x = 2 × 2 = 4

Mary's sister's age = x = 2 .