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 90 hours, how many hours did the secretary who worked the longest spend on the project?	Choose the correct choice:
A) 80 B) 70 C) 56 D) 45 E) 14
10x = 90   =&gt; x = 9   Therefore the secretary who worked the longest spent 9 x 5 = 45 hours on the project   Option (56)
<result>C</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 90 hours, how many hours did the secretary who worked the longest spend on the project?