Chris and Maddie share £120 in the ratio 3:5 How much do they each receive?

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Afrequency table of grades has five classes (a, b, c, d, f) with frequencies of 3, 13, 14, 5, and 3 respectively. using percentages, what are the relative frequencies of the five classes?

Yvaries directly as x. y =90 when x=6. find y when x=13