Answer:
60 seconds
Step-by-step explanation:
All you have to do is cross multiply and isolate x.
[tex] \frac{47}{20} \times \frac{141}{x} [/tex]
When you cross multiply, you get
[tex]47x = 2820[/tex]
To isolate x, just divide both sides by 47
[tex]x = 60 \: sec[/tex]
