Arithmatical - Partnership

DIRECTIONS : Problems based on Partnership.
7. A started a business with Rs.21,000 and is joined afterwards by B with Rs.36,000. After how many months did B join if the profits at the end of the year are divided equally?
  A.  3
  B.  4
  C.  5
  D.  6
Suppose B joined after x months.
Then,21000×12=36000×(12 - x)
= x= 5.
8. X and Y invested in a business. They earned some profit which they divided in the ratio of 2 : 3. If X invested Rs.40,000. the amount invested by Y is
  A.  Rs.45,000
  B.  Rs.50,000
  C.  Rs.60,000
  D.  Rs.80,000
Suppose Y invested Rs.y
Then,40000 /y = 2 / 3
‹=› y=(40000×3 / 2).
‹=› y=60000.
9. A and B started a business in partnership investing Rs.20,000 and Rs.15,000 respectively. After six months, C joined them with Rs.20,000. What will be B's share in the total profit of Rs.25,000 earned at the end of 2 years from the starting of the business?
  A.  Rs.7500
  B.  Rs.9000
  C.  Rs.9500
  D.  Rs.10,000
A : B : C=(20000×24):(15000×24):(20000×18)
=4 :3 :3
B's share =Rs.(25000×3/10)
= Rs.7500.
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