2X+2=3X

X=2

Ten digits are 4 and one digit is 6.

46

There is a disinfectant with a net weight of 250g per bottle. The explanation is as follows:

Disinfection reference value

(Scrubbing for 5 ~ 10 minute)

1. melons, tableware and kitchen supplies 1: 500

2. White clothes and object surfaces 1: 300

3. Infectious pollutants 1: 100

How many bottles of this disinfectant does 303 kg of liquid medicine need to disinfect the pollutants that infect patients?

303 *( 1/ 10 1)= 3kg。

3 kg =3000 g

3000/250= 12

Need 12 bottles of this disinfectant.