Jeremy is twice as old Randy now. 6 years ago, the sum of their age was 18. How old is Jeremy now?
Jeremy is twice as old Randy now. 6 years ago, the sum of their age was 18. How old is Jeremy now?
J = 2R (eq 1)
(J – 6) + (R – 6) = 18 (eq 2)
substitute 2R wherever you see J in (equation 2)
(2R – 6) + (R – 6) = 18
2R – 6 + R – 6 = 18
3R – 12 = 18
3R = 30
R = 10
from (eq 1) J = 2R
J = 2 • 10
J = 20
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