exam Maths Puzzle Numerical Ability

N varies directly as d. N = 10 when d = 8. Find N when d = 12

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exam Other Question

Factor by grouping
6c squared 11c - 2 Kelly has 36 coins in her purse, only nickels and quarters. She has eight more quarters than nickels. If she has a total of $6.20, how many nickels and quarters does she have?