A and B enter into partnership with capital as 7:9. At the end of 8 months, A withdraws. If they receive the profits in the ratio of 8:9 find how long B's capital was used? Choose the correct answer:
A) 8	B) 4	C) 5	D) 7	E) 6
7 * 8 : 9 * x = 8:9 =&gt; x= 7   Answer:7
<result>D</result>
A and B enter into partnership with capital as 7:9. At the end of 8 months, A withdraws. If they receive the profits in the ratio of 8:9 find how long B's capital was used?