The amounts of time that three secretaries worked on a special project are in the ratio of 1 to 2 to 5. If they worked a combined total of 128 hours, how many hours did the secretary who worked the longest spend on the project?
Answers:
A) 90
B) 70
C) 56
D) 16
E) 14
8x = 128   =&gt; x = 16   Therefore the secretary who worked the longest spent 16 x 5 = 90 hours on the project   Option (90)
<result>A</result>
The amounts of time that three secretaries worked on a special project are in the ratio of 1 to 2 to 5. If they worked a combined total of 128 hours, how many hours did the secretary who worked the longest spend on the project?