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mrs.graybought some eggs.she used 1/2 of them to make tars and 1/4 of the remainder to make a cake she had 9 eggs left how many eggs did she buy?
10 years ago

Answers

Jai
Let n = number of eggs she bought.
It was said she used 1/2 of them, then 1/4 of remainder, then she had 9 eggs left.
Thus, (total eggs) minus (used eggs) equals the 9 eggs remaining, or
n - [(1/2)n + (1/4)(1/2)n] = 9

Solving for n,
n - (0.5n + 0.125n) = 9
0.375n = 9
n = 9 / 0.375
n = 24 eggs

hope this helps~ `u`
10 years ago

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