exam Maths Puzzle Numerical Ability

A chemist has a 25% and a 50% acid solution. How much of each solution should be used to form 200 mL of a 35% acid solution?

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exam Other Question

Convert the numeral 1011 base 2 to a common base 10 number

A. 3
B. 5
C. 11
D. None of the above Water is poured into a conical container with a diameter of 20 cm and a height of 38 cm. If the volume of a cone is one-third the volume of a cylinder, write an equation for the volume of water as a function of the height of the water in the container.