maths
posted by mathshelp .
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 
bobpursley
R=3S
R+22=(S+22)219
3S+22=2S+4419
S=3 ? check that.
R=..
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