Answer:
The amount that Tony invested in fund B is 13,000.
Step-by-step explanation:
From the information given, you know that the profit from fund A plus the profit from fund B is equal to 660, which can be expressed as:
0.05a+0.02b=660
Also, you know that the amount Tony invested in Fund A was $5000 less than the amount he invested in Fund B, which is:
a=b-5,000
Now, you can replace a=b-5000 in the first equation:
0.05(b-5000)+0.02b=660
0.05b-250+0.02b=660
0.07b=660+250
0.07b=910
b=910/0.07
b=13,000
Finally, you can replace the value of b in a=b-5000 to find the value of a:
a=b-5,000
a=13,000-5,000
a=8,000
According to this, the answer is that the amount that Tony invested in fund B is 13,000.