Question 301819
Total investment by all three = $20000

x investment = $9000
ratio of investment = 9000/20000= 9/20
y investment = $7000
ratio of investment = 7000/20000 = 7 / 20
z= investment =$4000
ratio of invetment = 4000/20000=1/5 

PROFIT = $4800

the profit has to be shared in the ratio of their investment

A= 9/20 * 4800= $ 2160

Y = 7/20 * 4800 = $1680

Z= 1/5 * 4800    = $960