The least whole number which when subtracted from both the terms of the ratio 6 : 7 to give a ratio less than 16 : 21, is? Choices:
A) 3	B) 4	C) 5	D) 6	E) 7
Let x be subtracted. Then,   6 - x   7 - x   &lt;   16   21   21 (6 - x) &lt; 16 (7 - x)   5x &gt; 14   x &gt; 2.8   Least such whole number is 3.   3NSWER:3
<result>A</result>
The least whole number which when subtracted from both the terms of the ratio 6 : 7 to give a ratio less than 16 : 21, is?