A(n) = current term
a(n + 1) = next term
in a geometric sequence, the next term comes from a product of the current term and the common ratio.
the common ratio can be any value, let's say use r = ½.
if the current term is say hmmm 40, the next term is 40*½ , or 20, so indeed, the next term is smaller.
Answer:
630 word
10.5 minute: 10×60+0.5×60=600+30=630 second
60 word 60second
? word 630 second
?=630
