Question 1067657
{{{(1/500)/(1/1000)}}}
if we multiply the numerator and denominator by 1000,
that is {{{1000/1000}}} which is just multiplying by 1 we get
{{{(1000/1000)((1/500)/(1/1000))}}}
we get
{{{2/1}}}
so 2:1 is correct
another way to solve,
start with {{{(1/500)/(1/1000)}}} and notice that 1/500 = 2/1000
{{{(2/1000)/(1/1000)}}}, we can see 2/1000 is twice as big as 1/1000