if the difference between half of joy's age two years from now and one third of his age two years ago is 7 years, then the present age of joy is
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Let Joy's current age be x
1/2x+2(because it was half his age 2 years from now)-1/3x-2( because it is one third his age and two years ago)= 7
thus we get: 1/2x-1/3x-2+2=7
x(3/6x-2/6)=7
1/6x=7
x=6*7=42
Thus Joy is 42 years old.
1/2x+2(because it was half his age 2 years from now)-1/3x-2( because it is one third his age and two years ago)= 7
thus we get: 1/2x-1/3x-2+2=7
x(3/6x-2/6)=7
1/6x=7
x=6*7=42
Thus Joy is 42 years old.
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