exam Maths Puzzle Numerical Ability

There are 20 kilograms of a solution that is 10% salt. How many kilograms of salt must be added to make a solution that is 25% salt?

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exam Other Question

Widgets R Us received proceeds of $3,082.67 from a simple discount note at 11% interest for 4 months. What was the maturity value of the note?

a. $3,300
b. $3,200 determine whether the graph of y=/4x/ is