The amounts of time that three secretaries worked on a special project are in the ratio of 2 to 3 to 5. If they worked a combined total of 80 hours, how many hours did the secretary who worked the longest spend on the project? Choose the most appropriate option
A) 80
B) 70
C) 56
D) 16
E) 40
10x = 80   =&gt; x = 8   Therefore the secretary who worked the longest spent 8 x 5 = 40 hours on the project   Option (40)
<result>E</result>
The amounts of time that three secretaries worked on a special project are in the ratio of 2 to 3 to 5. If they worked a combined total of 80 hours, how many hours did the secretary who worked the longest spend on the project?