Question: Coarse aggregates from two stockpiles having coarse aggregate angular - ity ( crushed faces ) of 4 0 % and 9 0 % were blended

Coarse aggregates from two stockpiles having coarse aggregate angular-
ity (crushed faces) of 40% and 90% were blended at a ratio of 30:70 by weight,
respectively. What is the percent of crushed faces of the aggregate blend?

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