Answer:
average amount invested is $350000
Explanation:
Given data
amount invested = $600000
residual value = $100000
cost saving = $50000
to find out
average amount invested
solution
we will calculate here average amount invested by given formula that is
average amount invested = (amount invested + residual value) / 2 .......1
put all these value we get by equation 1
average amount invested = $600000 + $100000) / 2
average amount invested = $700000 / 2
average amount invested is $350000