exam Maths Puzzle Numerical Ability

An 800 g solution of acid and water contains 128 g of acid. What percent of the solution is acid?

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exam Other Question

What is the general form of the equation of a line that is parallel to the x-axis? In a 6-mile run, Cindy finished 15 minutes ahead of Bill. Cindys speed was 2 miles per hour faster than Bills speed. What was Bills speed?