Sarah is twice as old as John. Six years ago, Sarah was four times as old as John was then. How old is John now?

J − J o h n ′ s a g e n o w S − S a r a h ′ s a g e n o w S = 2 J an d S − 6 = 4 ( J − 6 ) ⇒ 2 J − 6 = 4 J − 24 2 J − 4 J = − 24 + 6 − 2 J = − 18 / : ( − 2 ) J = 9 A n s . N o w J o hn i s 9.

Answered by kate200468 | 2024-06-10

S = 2J S - 6 = 4(J - 6) S - 6 = 4J - 24 2J - 6 = 4J - 24 -2J = -18 -J = -9 J = 9
18 = 2(9) 12 = 4(9 - 6) 12 = 12!

Answered by Dannymal | 2024-06-10

John is currently 9 years old.
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Answered by kate200468 | 2024-12-26