0.0159
219.5
0.0114
0.0182
no
0
Absolutely yes.
439 = (4 x 100) + (3 x 10) + (9 x 1)
1990/20 ÷ 20 = 199/40 or 439/40
probably 9 and a 1/2 hours
The ISBN of The Familiar - Animorphs - is 0-439-11515-9.
The ISBN of Orphan at My Door is 0-439-98834-9.