You have three types of a sand/salt/beet juice mixture for
preparing the roads for different kinds of storm conditions. The
first type (A) is 25% sand, 10% salt, and 65% beet juice. The
second type (B) is 10% sand, 50% salt, and 40% beet juice. The
third type is 70% sand, 15% salt, and 15% beet juice (C). For the
storm that is coming, we need a mixture that will be 40% sand, 25%
salt, and 35% beet juice (D)....