Carine is 7 years older than her brother. three years ago, their total age was 43 years. what will be carine's age in 12 years' time?

You have to spit their age in half which would be 21.5
That would be his age then you would add 7 to hers which would then be 28.5 then add your 12 to it to make it 40.5

The answer is 63.!