a chemist has two solutions one of which is 40% acid and the other is 20% acid.how many liters of solution with 20% acid should the chemist mix to get 10 liters of solution that is 25% acid? (a)8...
a chemist has two solutions one of which is 40% acid and the other is 20% acid.how many liters of solution with 20% acid should the chemist mix to get 10 liters of solution that is 25% acid? (a)8...
a chemist has two solutions , one of which is 40% acid and the other is 20% acid . how many liters of solution with 20% acid should the chemist mix to get 10 liters of solution that is 25% (a)8...
jim average score for four algebra test was 85 out of possible 100 if his score on two test were 75 and 80.what is the lowest that either of his other scores could have been? (a)10...
A corporation with 5,000,000 shares of publicly listed stock reported total earnings of $7.20 share for the first 9 months of operation .during the final quarter the no of publicly listed shares was...
A restaurent orders 150 kgs of pumpkins from the farmers market . the farmers fills the order with 23 pumpkins . the average mass of the first 20 pumpkins is 6.5 kg what must be the minimum average...
the average weight of 20 students in a class is decreased by 500g ,when one of the boys whose weight is 45 kg is replaced by a new boy then weight of the new boy is?
the average of 25 students is 18 ; that of first twelve is 14 and the last twelve is 17 thirteenth result is:
if the average of x and y is 40 and (z-x)2 =3600 what could be the average of y and z? (a)10 (b)20 (c)50 (d)65 (e)70
in a class of 21 students the average score on math test was 77% if suzie got 95% and jack got 78% what is the average grade of the other 19 students? (a)89% (b)85% (c)80%...
In a math course, a student scored 100 on one test,97 on another test, and 88 on each of the other tests. The students test average, where each is weighted equally is exactly 91. What is...
In January a band plays 6 shows and averages 120 people at each show. In February this band plays 4 shows and averages 90 people at each one. What is the average number of people at each show which...
My question is a word problem and I need help with using a strategy to solve.
At a construction site, 6 workers carted an average of 15 kilograms of building materials. Another 3 workers joined them and the average amount they carried became 18 kilograms. How much did each...
please answer asap
and what is best spread and average to use? is percentage of population in bad health variable and the percentage born in state; continuous data or categoric?
write an equation to represent the situation then solve
show me some basic so that ii can slove more
82% =0.7 75% =1 x= 0.3 what does x equal?
I do not know how to set this up.
Joe took 3 quizzes and his grades were 94, 78, and 80. If a test counts as the grade of 2 quizzes, what is the lowest grade that Joe needs to make on the test to have an average of 90?