a man could finish the job in 4hours , while the son could finish it in 6 hours. if they work together . how long[..]

5 years from now they will twice as old. how old are they now?

a box contains 5 times as many as many dimes as nickel. the total amount is $2.20, how many coins of each type are[..]

a box contains 30 coins in nickel and in dimes, worth $2.40, how many of each kind are there?

5 years ago father is three times as old as his son . 5 years hence they will be only 2 times as old, find their[..]

how much oure acid should be mixed with 3 gallons of a 20% acid solution in order to get a 40% acid solution?

how many gallons of 50% antifreeze solution nuar bw mixed with 90 gallons of 25% antifreeze to get a mixture that is[..]

how many gallons of 80% antifreeze solution nuar bw mixed with 90 gallons of 15% antifreeze to get a mixture that is[..]

how many gallons of 90% antifreeze solution must be mixed with 80 gallons of 10% antifreeze to get a mixture of that[..]

Find the coordinates of the x-intercept. -x - 2y = 6