2.) Solve for missing value. x varies directly with y and z. x=400 when y=8 and

2.) Solve for missing value. x varies directly with y and z. x=400 when y=8 and z=10. Find x when y=10 and z=12.3.)If 4 workers can paint 5 trucks in one hour how many people will be needed to paint 200 trucks in 8 hours?4.)x varies directly with y and inversely with z. x=20 when y=8 and z=4. Find x when y=4 and z=8.5.) x varies directly with y and inversely with z. x=5 when y=10 and z=5. Find x when y=10 and z=10.6.) x varies directly with y and inversely with z. x=0.12 when y=12 and z=2. Find x when y=1200 and z=1.7.)The time (t) required to empty a tank varies inversely as the rate (r) of pumping. A pump can empty a tank of 90 minutes at the rate of 1200 L/minute. How long will the pump take to empty the tank at 3000 L/minute.8.)x varies directly with y and z. x=5000 when y=5 and z=10 Find x when y=2 and z=3.9.)Two workers can trim 400 meters of hedge in 10 hours. How long will 5 workers take to trim 600 meters of hedge?10.)x varies directly with y and z. x=1200 when y=20 and z=30. Find x when y=10 and z=20.11.)x varies directly with y and z. x=120 when y=5 and z=8. Find x when y=6 and z=2.12.)x varies directly with y and inversely with z. x=0.25 when y=10 and z=20. Find x when y=20 and z=10.13.) If c varies jointly as f and g and c=27 and f=18 and g=6 find c when f=30 and g=10.