The difference of two numbers is 21. The sum of 3 times the larger number and twice the smaller number Is 103. Find the smaller number.

Empty box + box + empty box fill in the box is equal to 30 how

If the perimeter of the garden is 37 ft. the width is x and the length is 15 ft. what is the width of the garden in feet?

How many liters of peroxide should be added to 12 liters of an 8% peroxide solution so that the resulting solution contains 16% peroxide?   original added new amount of peroxide 0.96 liters x 0.96 + x amount of solution 12 liters x 12 + x 0.18 liter 1.14 liters 1.92 liters 2.10 liters