Respuesta :

 The answer will be 210 seconds. 60 X 3 = 180+ 30= 210
There are 60 seconds in a minute so three of that would be 180 seconds for the three minutes. But we still have a half left so half of 60 is 30 and 180+30=210 so your total would be 210 seconds in 3[tex] \frac{1}2} [/tex] minutes.

Hope I helped :)