Question 669942
Fund A ---$ 5000---------3% Interest = $150

Fund B ---$x-------------10% Interest = 0.1x

Total amount invested = 5000+x
Rate of return = 5%

Interest on total amount = 0.05(5000+x)

Fund A interest + Fund B interest = Total Interest

150+0.1x=0.05(5000+x)

150+0.1x= 250+0.05x

0.1x-0.05x= 250-150
0.05x=100
x= 100/0.05
x=2000

$ 2000 was invested in Fund B