17. Calculate the belt ratio if the number of teeth in the driven gear is \( 20 \) and the number of teeth in the driver gear is \( 10 \) .
A. \( 2 : 1 \)
B. \( 1 : 2 \)
C. \( 5 : 1 \)
D. The information provided is insufficient to calculate the belt ratio.
Option A is correct
How long will it take \(\$ 1500\) to double itself at \(6 \%\) sim- ple interest?
A pharmacist makes eye drops with saline solution. A \(10 \%\) saline solution mixed with an \(80 \%\) saline solution makes \(7\) cups of a \(60 \%\) saline solution. How many cups of the \(80 \%\) solution should be used?
