Question

Pizza dough doubles in volume every 3 minutes and reaches its maximum size in 30 minutes. How many minutes does it take for the pizza to reach half its maximum volume?
(A) 3
(B) 10
(C) 15
(D) 24
(E) 27

Solution: 30/3 = 10 times.

20^10/ 2^1 = 2^9

9 x 3 = 27

Why though? Can someone explain the steps?

Answer 1

A If I'm not mistaking