310 algebra De mystif ieD
- A school district’s printing services department owns two printing presses. The
department must produce an order of brochures. Press A would take 10 hours
to produce the order, and Press B would take 8 hours. Press A is used alone for
1 hour before Press B starts producing the brochures. After Press B joins in, how
long will the presses need to complete the order?
a. 3 hours
b. 3.5 hours
C. 4 hours
D. 4.5 hours - 80 is what percent of 125?
a. 64%
b. 75%
C. 92%
D. 156.25% - The relationship between degrees Fahrenheit and degrees Celsius is given by
the formula C = ^59 ()F – 32. For what temperature will degrees Celsius be 40 more
than degrees Fahrenheit?
a. −^90 C
b. −^100 C
C. −^120 C
D. −^130 C