Answer:
The first is 1/20
b is 1/40
c is 1/15
and d is 1/15
Explanation:
To divide a fraction, you change the sign to multiplication and use the recipricol *However you spell that* for the second number (Keep, Change, Flip) and then you multiply the numerators by eachother, and you multiply the denominators by eachother So it would be
1/2 * 1/10=1/20
1/4*1/10=1/40
1/3*1/5=1/15
1/5*1/3=1/15