[求助]GWD-1-24

Q24:

Four staff members at a certain company worked on a project.  The amounts of time that the four staff members worked on the project were in the ratio 2 to 3 to 5 to 6.  If one of the four staff members worked on the project for 30 hours, which of the following CANNOT be the total number of hours that the four staff members worked on the project?

A.    80

B.      96

C.      160

D.    192

E.      240

key ===D

为什么A是对的。。。我算了只可能是 90  96  160  240

Thank you !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

assume employee whose ratio is 6 worked 30 hours,
30hrs / (6/16) = 80hrs   (16 = 2+3+5+6)

think it over..............

thank you

hehehehe 15*6=80

I am idiot,  I know