Respuesta :
Answer:
10 student volunteered last year
Step-by-step explanation:
20 this year is twice they had last year so divide 20 by 2 and you get 10
Answer:
10
Step-by-step explanation:
Do the inverse operation of what it says, so because it says twice as many, you would divide by 2.
20 divided by 2 = 10, because it is half of 20.