exam
Maths Puzzle
Numerical Ability
A barrel contains 30 gallons of 40% antifreeze. How many gallons of an 80% antifreeze solution should be added to make the barrel contain 50% antifreeze?
Read Solution (Total 0)
exam Other Question
The total profit (in dollars) for sales of x rowing machines is given by P(x)=-02x^2+300x-200. What is the profit if 500 are sold? For what value of x will the profit be at a maximum
x/4 - y/11 = -9/44
x/6 - y/13 = -1/26