Answer:
If 150 are willing to pay $6, amount accumulated = 150 multiply with 6= $900
If 50 family pays & $5 each, amount accumulated = 50 multiply with 5 = $250
Total = $900 + $250 = $1150.
Excess amount = $1150 - $950 = $200
(i) Yes, the money should be invested because after collection from families and investing, there is an excess fund of $200.