Algebra

Ten years ago, Heather was twice as old as her brother David. Today, she is 12 years older than him. How old are they both today?

Heather's age today: 27
David's age today: 15


Thanks in advance! I tried using other solutions from Google and just am not sure I got it right.

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  1. 10 years ago H-10=2(D-10)equ 1 H=D+12 equ 2 sub equ 2 in equ 1 D+12-10=2D-20 D+2=2D-20 D=22yrs H=22+12=34yrs

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    posted by Kosy

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