This number would be 24. So 21 own football boots, 16 own a football and there are 24 children in the class. not good at math so yeah
In 1 hour, a machine could make:

parts
In 28.8 hours, that machine make

parts
Answer:
D
Step-by-step explanation:
It just is trust
Step-by-step explanation:
7 X + 8 = X+12 + 3X+20
3 X = 24
X= 8
m< RPQ = 8+12 = 20