Question
In a bookstore, the number of markers was 23 of the total number of markers and rulers together. Cody sold the markers and rulers in sets of 1 marker and 3 rulers. After selling all the rulers, he still had 15 markers left. How many rulers were in the bookstore at first?
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In a bookstore, the number of markers was 23 of the total number of markers and rulers together. Cody sold the markers and rulers in sets of 1 marker and 3 rulers. After selling all the rulers, he still had 15 markers left. How many rulers were in the bookstore at first?