4. mary, who is sixteen years old, is four times as old as her brother. how old will mary be when she is twice as old as her brother?

She will be 24 in 8 years and her brother will be 12 in 8 years. She is currently four times as old which means brother is currently 4.

answer: if though all maps are biased we study them to tell we have to go and use them to tell the direction we have to go but if you don't want to use a compass to find the way to go then the only option is to use the standard maps made by the european's  

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