Question

of the 800 sweaters at a certain store, 150 are red. how many of the red sweaters at the store are made of pure wool?(1) 320 of the sweaters at the store are neither red nor made of pure wool.(2) 100 of the red sweaters at the store are not made of pure wool.

Answer 1

THE NO OF PURE RED WOOL SWEATERS ARE=280

BECAUSE TOTAL RED SWEATERS=150 AND NON PURE WOOL SWEATERS=100

THEREFORE 150-100=50

AND, 800-(150+320+100)

= 800-570

230

THEN, 230+50

=280