Tough and Tricky questions: Word Problems.
It takes Sarah 12 minutes to do one oil change, and it takes Alice 8 minutes. If Sarah and Alice both begin doing oil changes at exactly 9:00 a.m. without pausing, when is the first time at which they will finish changing the oil of a car simultaneously?
Select the correct option.
A) 09:24 a.m.
B) 10:42 a.m.
C) 12:00 a.m.
D) 1:00 p.m.
E) 2:00 p.m.
LCM of 812   8 = 2 * 2 * 2   12 = 2 * 2 * 3   LCM = 2 * 2 * 2 * 3= 
<gadget id="calculator">2 * 2 * 2 * 3</gadget>
<output>24</output>
24 minutes   92409:24 a.m.M   09:24 a.m.
<result>A</result>
Tough and Tricky questions: Word Problems.
It takes Sarah 12 minutes to do one oil change, and it takes Alice 8 minutes. If Sarah and Alice both begin doing oil changes at exactly 9:00 a.m. without pausing, when is the first time at which they will finish changing the oil of a car simultaneously?