Draw a Venn diagram.

Put a pronumeral a, b, c, d, e, f, g in each part.

You can figure out where I did this to get:

a + b + c = 400 .... (1)

a + e + g = 380 .... (2)

c + f + g = 542 .... (3)

b + d = 294 .... (4)

d + f = 277 .... (5)

d + e = 190 .... (6)

a + b + c + d + e + f + g = 1000 .... (7)

Solve equations (1), (2), (3) ...... (7) simultaneously for a, b, c, .... g (not too tough).

d = 83.

There are probably easier ways but this is how I generally do it.