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Answered

allen ia 4 years younger than her sister the product of their ages isls 357 how old is her sister ?
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Sagot :

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Answer:

Allen is 17.

Her sister is 21.

Step-by-step explanation:

Allen's age = x - 4

Her sisters age = x

(x - 4)(x) = 357

x^2 - 4x - 357 = 0

(x-21)(x+17) = 0

x-21 =0

x = 21

x+17=0

x = -17

To check my answer:

(17)(21) = 357

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