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It is 50 years.

Q: What if Alvin is 14 years younger than Elga. The sum of their ages is 86 . What is Elga's age?

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If Alvin is 7 years younger than Elga, then Alvin + 7 = Elga. If the sum of their ages is 87, then Alvin + Elga = 87. Substitute Alvin + 7 in the previous equation to get Alvin + (Alvin + 7) = 87. Reduce that and get 2 Alvin = 80 which means that Alvin = 40. That means that Elga = 47.

a = 3e a + e = 76 ∴ 3e + e = 76 e = 76/4 e = 19 ∴ a = 3 × 19 a = 57 Alvin is 57 years old, and Elga is 19

Elga is 24, because this would mean that Alvin's age is 48, and 24+48=72.

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If Alvin is 7 years younger than Elga, then Alvin + 7 = Elga. If the sum of their ages is 87, then Alvin + Elga = 87. Substitute Alvin + 7 in the previous equation to get Alvin + (Alvin + 7) = 87. Reduce that and get 2 Alvin = 80 which means that Alvin = 40. That means that Elga = 47.

a = 3e a + e = 76 ∴ 3e + e = 76 e = 76/4 e = 19 ∴ a = 3 × 19 a = 57 Alvin is 57 years old, and Elga is 19

Let's work that out together. X + 10 = 34 so 34 - 10 = X so 34 - 10 = 24 Elga is X so is 24.

57

Alvin +Elga = 56 3 : 1 56 รท 4 = 14 Alvin = 56 - 14 = 42 Elga = 14

A = E - 9 A + E = 87 that is, (E - 9) + E = 87 2E - 9 = 87 2E = 87 + 9 = 96 E = 96/2 = 48

Elga is 24, because this would mean that Alvin's age is 48, and 24+48=72.

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