Deshrox 40%, 1000 ml is needed f the
for
patient ,the pharmacy only sticks 20% and 50% solution

How much of each is needed
to make the solution.
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Aswim teacher sells lesson packages. the best deal has the highest ratio of lessons to total cost.swim lesson packagesnumber of lessons total cost$10$4010 1 $8015$80which package is the best deal? l lesson for $105 lessons for $4010 lessons for $8015 lessons for $80mark this and returnsave and exit

How do i do this activity, is appreciated

Car a and car b were in a race .the driver of car b claimed that his car was twice as fast as car a