It is just me that is confused by the wording? It says that the "newly developed light bulb is more cost-effective?" Doesn't that mean that the new bulb is cheaper?
#help (Added by Admin)
Should we be studying on target time or standard time?
Are you sure?
It is just me that is confused by the wording? It says that the "newly developed light bulb is more cost-effective?" Doesn't that mean that the new bulb is cheaper?
#help (Added by Admin)