Twice the raidus. okay, Im sure that how you spell Radius but anyway, Hope this helps.
Let Ted be x.
Ed is 7 years older = x + 7
Ed = (3/4)Ted
(x + 7) = (3/4)x
x + 7 = 3x/4
x - 3x/4 = -7
x/4 = -7
x = -28, Ted = -28 years.
(x + 7) = -28 + 7 = -21, Ed = -21 years
Goodness. We had negative numbers for the ages, well does that make sense? No it doesn't.
Our answer is correct. But the sense in the question is lacking. The question has been wrongly set.
<span>We might assume negative ages to mean before they came into the world, before birth! </span>
0x1=0
1x2=2
2x3=6
3x4=12
4x5=20
<u>Solution</u><u>:</u>
The rationalisation factor for 
is 
So, let us apply it here.
The rationalising factor for 5 - √2 is 5 + √2.
Therefore, multiplying and dividing by 5 + √2, we have
<u>Answer:</u>
<u>
</u>
Hope you could understand.
If you have any query, feel free to ask.
