Answer:

a.10

Step-by-step explanation:

20×1/2

sana po makatulong

Answer:

a. 10

Step-by-step explanation:

20 x 1/2 = 10

you can check my answer using calculator but if you want it to check manually just multiply the numerators (20&1 = 20) and denominators (1 &2 = 2) and then perform division (20÷2).

you may wonder where does the other 1 came from? it is from the whole number since all of whole numbers have an imaginary 1 below them or in their denominator.