# maths

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At present, Ronald is 3 times as old as his sister. in 22 years' time, Ronald's age will be 19 years less than twice his sister's age. How old is Ronald now?

• maths -

R=3S
R+22=(S+22)2-19

3S+22=2S+44-19
S=3 ? check that.

R=..

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