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For numbers 16-19. refer to this: a varies directly as b and inversely as c
16. If a = 10,b= 4 and c = 8. Find bif a = 5 and c = 4.
a.1
b.2
c.3
d. 4
17. If a = 4.b = 8 and c = 4. Find a if b=5 and c = 2.
a. 4
b. 6
c. 3
d. 4
18. What is the value of the variation constant for number 17?
a. 20
b. 30
C. 15
d. 25
19. Which one of the following is the equation of the variation where a varies directly as b and
jointly as c
a. a=kb/c
b. b=ka/c
c. c=ka/b
d.a=kc/b
20. The volume of gas varies directly as the temperature and inversely as the pressure. If the
volume is 250 cubic centimeters when the temperature is 300° K and the pressure is 18 pounds per
square centimeter, what is the volume when the temperature is 270°K and the pressure is 20 pounds
per square centimeter
a. Volume = 140 cubic centimeters
b. Volume = 130 cubic centimeters
c. Volume = 142 cubic centimeters
d. Volume = 135 cubic centimeters
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