exam Maths Puzzle Numerical Ability

felix has 35 coins consisting of dimes and nickles. If the value of his coins is $3.30, then how many of each type does he have?

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exam Other Question

Concrete is sold by the yard, which means by the cubic yard. It costs $70 per yard. How many cubic feet are in a cubic yard? How much would it cost to pour a slab that is 14ft by 16ft by 6in for a patio? Can you help me divide and simplify:

18x^2+17+4/8x-12 divided by 9x^2+4x/24x-36