if an alloy contains 30% silver mixed with 55% silver alloy to get 80 pounds of 40% alloy. how much of the 30%[..]

Two cars, heading toward each other on a divided highway, are 250 miles apart. If one car travels 45 mi/hr and the[..]

A grain dealer mixed 100 kilos of corn and rice, which he sold at P31/kilo. If corn sells at P25/kilo and rice[..]

if 96 chickens and goats are put together, they have the total 312 legs. how many chickens and goats are there?

The bag was filled with red marbles and blue marbles in t he ratio of 5 to 7. If there were 180 marbles in the bag,[..]

A teacher finds that the test scores of a group of 40 students have a mean of 75 and a standard deviation of 10. If[..]

to get an a in a course you must have an average of atleast 90 on four tests of 100 points each. the scores on your[..]

Find two consecutive even integers such that the smaller added to four times the larger gives a sum of 34

Find a point form for the line passing through (-2,0) and (0,-1)

if a cube has an edge equal to the diagonal of another cube, find the ratio of their volumes.