17-11-2016
Mathematics

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boron is ten years older than his sister in three years he will be twice as old as she is now. How old are they now?

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17-11-2016

Equations:
B = s + 10
B+3 = 2(s+3)
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Substitute for "B" and solve for "s"::
s+10 + 3 = 2s+6

s + 13 = 2s+6
s = 7 (Sister's age)
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B = s + 10 = 17 (Boron's age now)

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josephj20 josephj20

18-11-2021

Answer:

Boron is 23

sister 13

Step-by-step explanation:

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