Answer:
Money Market: $250 
Stocks: $500 
Bonds: $250
Step-by-step explanation:
To find the dollar amount invested in each, multiply the total amount of money you have to invest by the percentage being invested. 
Money Market
25% of $1,000
25%*1,000 
Convert 25% to a decimal by dividing 25 by 100, or moving the decimal place 2 spots to the left. 
25/100=0.25 
25.0-->2.5-->0.25 
0.25*1,000=250 
$250 is invested in the money market account. 
Stocks 
50% of $1,000
50%*1,000 
Convert 50% to a decimal by dividing 50 by 100, or moving the decimal place 2 spots to the left. 
50/100=0.50 
50.0-->5.0-->0.50 
0.50*1,000=500 
$500 is invested in stocks. 
Bonds
25% of $1,000
25%*1,000 
Convert 25% to a decimal by dividing 25 by 100, or moving the decimal place 2 spots to the left. 
25/100=0.25 
25.0-->2.5-->0.25 
0.25*1,000=250 
$250 is invested in bonds. 
$250 is invested in a money market account, $500 in stocks, and $250 in bonds.