exam Maths Puzzle Numerical Ability

A collection of quarters and nickels is worth $3.70. There are 22 coins in all. How many of each are there?

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I encounter problems with two of the following percent problems. Could you help me please.

A basketball player made 9 foul shots, which is 75% of the number he attempted. The c How would I write the equation of the line with slope 5 and y-intercept (0,-3)?