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Thrice of a number is 24 more than one-third of it. The number is:
Let's assume the number is 'y'.
Thrice of a number is 24 more than one-third of it.
$$3y=\frac{y}{3}+24$$
$$3y-\frac{y}{3}=24$$
$$\frac{9y}{3}-\frac{y}{3}=24$$
$$\frac{8y}{3}=24$$
$$\frac{y}{3}=3$$
the number = y = 9
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