How many left
Sophie had some marbles. She gave 1/4 of them to her friend Alex and then gave 1/3 of the remaining marbles to her brother. If she had 30 marbles left, how many marbles did Sophie have at the beginning?
Word Problem
A bridge is built across a river. One quarter of the bridge is over the left bank of the river and one third of the bridge is over the right bank. The river is 120 m wide. How long is the bridge?
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