Ethan writes 1/6 of a page in 1/12 of a minute. how much time does it take him to write a full page?

(1/6) / (1/12) = 1/x1/6 pg to 1/12 min = 1 pg to x min
cross multiply
(1/6)(x) = (1/12)(1)
1/6x = 1/12multiply by 6, cancelling out the 1/6 on the left side
x = 1/12 * 6
x = 6/12 reduces to 1/2 min <===

The first option would be correct if it were one half and not one