Asked by Lizzieee
Carol is five times as old as her brother. She will be three times asold as her brother in two yrs.How old is carol now?
Answers
Answered by
Steve
c = 5b
c+2 = 3(b+2)
c+2 = 3(c/5 + 2)
c+2 = 3c/5 + 6
2c/5 = 4
c = 4*5/2
c = 10
Check:
Carol is now 10, brother is 2
in two years,
Carol is 12, brother is 4
c+2 = 3(b+2)
c+2 = 3(c/5 + 2)
c+2 = 3c/5 + 6
2c/5 = 4
c = 4*5/2
c = 10
Check:
Carol is now 10, brother is 2
in two years,
Carol is 12, brother is 4
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