Re: If x > 21/40 then x could be which of the following?
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07 Nov 2022, 09:37
You can solve this just with eyeball and \(\approx\)
21/40 is just above 1/2
A. 1/2 no
B. 11/20 yes
C. 13/25 no
D. 19/36 yes 20/36 >>> 5/9 >>> 5/10 >>> yes just above
E. 31/60 30/60 >>> this is tricky too close better to cross multiply the fractions and see which is greater. 21/40*31/60 >>>< 21*60 & 31/40 0.52 and 0.51 . It is off (or use the calculator)
F. 38/75 off
G. 41/80 Again like E. Off