How many years are in 15 decades?

[ErlindaDea]

I’m trying to figure out how long 15 decades would be in years. Can someone explain the calculation?

 

[nikhilrajoria]

1 decade = 10 years → 15 decades = 150 years.

 

[peterkavinsky]

There are 150 years in 15 decades, since one decade equals 10 years.