Asked by Calvin
Ricky is 4 times as old as his sister, who's 5. How old will Ricky be when he's twice as old as her?
Answers
Answered by
Damon
s = 5
R = 4 * 5 = 20
(5+x)2 = 20 + x
10 + 2 x = 20 + x
x = 10 years from now
20 + 10 = 30
R = 4 * 5 = 20
(5+x)2 = 20 + x
10 + 2 x = 20 + x
x = 10 years from now
20 + 10 = 30
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