Question 138302
The least whole number which when subracted from both the terms of the ratio 6:7 gives a ratio less than 16:21 is

a)2	b)3	c)4	d)6
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(6-k)/(7-k) < 16/21
21(6-k)<16(7-k)
126-21k < 112-16k
14 < 5k
k> 14/5 = 2.8
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k must be 3
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Cheers,
Stan H.