19. 0.5 mg = 0.125 mg
2 ml
X ml
0.5 X = 0.250
X = 0.5 ml (paras 2-2, 2-3, 2-18a)
20. gr 1/150 = gr 1/200
0.8 ml
X ml
1 X = .004 ml
150
X = 0.6 ml
(paras 2-2, 2-3, 2-15a)
21. (a)
1 gm = 500 mg
2 ml
X ml
(b)
1 gm = 1000 mg
(c)
1000 mg = 500 mg
2 ml
X ml
1000 X = 1000
X = 1 ml (paras 2-2, 2-3, 2-10, 2-18a)
22. 2.2 ml
= X ml
500 mg
250 mg
500 X = 550
X = 1.1 ml (paras 2-2, 2-3, 2-18b)
23. 100 units = 46 units
1 ml
X ml
100 X = 46
X = 0.46 ml (paras 2-2, 2-3, 2-18d)
MD0904
2-47