Bed A has 500 plants.
Bed B has 450 plants, but 50 of them are in Bed A, so there are only 400 more plants,
Bed C has 350 plants, but 100 of them are in Bed A, so there are only 250 more plants.
Adding 500 + 400 + 250 = 1150 total plants.
![Three flower beds overlap as shown. Bed A has 500 plants, bed B has 450 plants, and bed C has 350 plants. Beds A and B share 50 plants, while beds A and C share 100. What is the total number of plants? [asy] /* AMC8 1999 #9 Problem */ draw((0,0)--(3,0)--(3,1)--(0,1)--cycle); draw(circle((.15,0), .5)); draw(circle((3,-0.25), .65)); label("C", (.2,-0.25)); label("B", (3.25, -0.25)); label("A", (1.5, 0.45)); [/asy]](/api/ssl-img-proxy?src=http%3A%2F%2Fdata.artofproblemsolving.com%2Faops20%2Flatex%2Fimages%2Fd05eaa65e7853c9b346f1ea44b99bce91c26285c.png)
