My grandfather

My grandfather was 8 times older to me 16 years ago. He would be 3 times of my age 8 years from now. What was the ratio of our ages 8 years ago?

Correct answer:

r =  53:11

Step-by-step explanation:

a16=8 (b16) a+8=3 (b+8)  a8b=112 a3b=16  Row2Row1Row2 a8b=112 5b=128  b=5128=25.6 a=112+8b=112+8 25.6=92.8  a=5464=92.8 b=5128=25.6  r=b8a8=25.6892.884.8182=53:11



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