Question 761819
 {{{x}}} - the first number
{{{y}}} - the second number
40% of a number is {{{0.4x}}}, 
{{{2/3}}} of another number is {{{2/3}}}{{{y}}}
{{{0.4x=2/3}}}{{{y}}}divide by {{{0.4}}}
{{{x=(2/3)/(4/10)}}}{{{y}}}
{{{x=(2/3)*(10/4)}}}{{{y}}}
{{{x=5/3}}}{{{y}}} divide by y
{{{x/y=5/3}}} 
{{{x:y=5:3}}} is the ratio of first number to the second number