Mary contracted to buy 100 table lamps. under the terms of the agreement, mary is to pay for the lamps upon delivery. this is an example of:

The given situation is an example of a concurrent condition, wherein Mar has contracted to buy on hundred table lamps, under those terms of services of agreement, Mary has to pay for the lamps upon delivery. A concurrent condition is a type of condition which ought to happen or be accomplished at the same time with a new condition, the presentation by each party unconnectedly functioning as a condition example.