Mary is twice older than her sister. In five years she will be 2 years older than her. Find how old are they both now
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let mary's sister age be x
'' '' =2x
after 5 years
her sis age =x+5
her age =2x+5
according to problem
x+5+(2x+5) =x+2+2x
3x+10 =
'' '' =2x
after 5 years
her sis age =x+5
her age =2x+5
according to problem
x+5+(2x+5) =x+2+2x
3x+10 =
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