Respuesta :

122095

Answer:  600

Step-by-step explanation:

 Let the mass as x.

So,

120% of x = 720

» 120 x/100 = 720

» 6 x / 5 = 720

x = 720×5 / 6

= 120 ×5 = 600 Ans.

helpfully...

brainliest.

Answer:

= 120 ×5 = 600 Ans.

Step-by-step explanation: