Mathematics, 10.06.2020 18:57 helplessstudent3

Penny had a bag of marbles. She gave one-third of them to Rebecca, and then one-fourth of the remaining marbles to John. Penny then had 24 marbles left in the bag. How many marbles were
in the bag to start with?
pls explain.

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Penny had a bag of marbles. She gave one-third of them to Rebecca, and then one-fourth of the remai...