Question 147061
Let x=Marvin's age now (x+6=Marvin's age six years from now)
Then x+4=Harry's age now (x+4+6=x+10=Harry's age six years from now)

So, our equation to solve is:
x+6=5/6(x+10) multiply each term by 6 and also get rid of parens

6x+36=5x+50 subtract 36 and also 5x from each side

6x-5x+36-36=5x-5x+50-36  collect like terms

x=14---------------------------Marvin's age now

x+4=14+4=18-------------------Harry's age now

CK
18 is 4 more that 14
and
14+6=5/6(18+6)
20=20

Hope this helps---ptaylor