SOLUTION: In 4 years, Beatrice will be three years less than twice of Arthur's current age. If Beatrice is now 15 years old, how old is Arthur now?

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Question 1121219: In 4 years, Beatrice will be three years less than twice of Arthur's current age. If Beatrice is now 15 years old, how old is Arthur now?
Found 2 solutions by josgarithmetic, ikleyn:
Answer by josgarithmetic(39613) About Me  (Show Source):
You can put this solution on YOUR website!
A, Arthur's age now

2A-3, Beatrice in 4 years;
2A-3-4=2A-7, Beatrice NOW;


Given: Beatrice is 15 years of age now.
highlight_green%282A-7=15%29

highlight%28A=11%29

Answer by ikleyn(52752) About Me  (Show Source):
You can put this solution on YOUR website!
.
Beatrice is now 15 years old ====> in 4 years she will be 15+4 = 19 years old.


The number to which 19 is 3 units less is 22.


So, Arthur's current age is 22/2 = 11 years.


Answer.  Arthur is 11 years old now.