To find out how many minutes Emma spent studying, we need to multiply Sarah's study time by 1 1/2.
Sarah spent 35 1/2 minutes studying.
1 1/2 times 35 1/2 can be calculated as:
(3/2) * (71/2) = 213/4 = 53 1/4 minutes.
Therefore, Emma spent 53 1/4 minutes studying.