Please provide your answer and explanation
Q) Andrew will be half as old as Larry in 3 years. Andrew will also be one-third as old as Jerome in 5 years. if Jerome is 15 years older than Larry, how old is Andrew?.
I'm struggling with the age problem in general. Is there a good method to solve these problems?
Best way to do these problems is to write out every date.
Now || 3yrs from now || 5yrs from now
A || A+3 || A+5
J || J+3 || J+5
L || L+3 || L+5
Now make the equations for the appropriate years.
Since Andrew will be half as old as jerome in 3 years. you can rewrite it like this: 2(A+3)=L+3
Next equation: rewrite it just like above. Make the two sides equal to each other.
Final one 15+L=J (since J is 15yrs older, adding 15 to L will equal J).
J=15+L--> 3(A+5)=J+5--> 3A+15=15+L+5 --> 3A-5=L
2(A+3)=L+3--> 2A+6=3A-5+3 -->2A+6=3A-2 ---> A=8