exam Maths Puzzle Numerical Ability

Rationalize the denominator:
5____
√[3] + √[5]

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exam Other Question

I need help in solving the linear ineualities graphically
3x-y<=6
x>=1
y>=3
Sam found a number of nickels, dimes and quarters. He found 3 more dimes than nickels but twice as many quarter as dimes. The total value of the coins was $5.05. How many coins of each type did Sam find?