Q: If Three years ago Mary was three times as old as her sister now Mary is twice as old as her sister how old is Mary now?

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12,4...16,8

Mary is 4 years old. [A+]

There are two possible (and different) answers: 2x + 3y = 12 or 2*(x + 3y)= 12 The first one is (twice a number) increased by (three times another) The second is twice (a number increased by (three times another)).

Twice with a remainder of three

Twice with a remainder of three

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12,4...16,8

Amy will be 16 when she is twice as old as Emily at 8.

twice the difference of three times a number and eight

Mary is 4 years old. [A+]

There are two possible (and different) answers: 2x + 3y = 12 or 2*(x + 3y)= 12 The first one is (twice a number) increased by (three times another) The second is twice (a number increased by (three times another)).

Sister = 5 David = 13

Twice with a remainder of three

Twice with a remainder of three

Twice with a remainder of three

Twice with a remainder of three

Twice with a remainder of three

She had three children and got married twice.