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177 problems, every one written from scratch, every wrong answer carrying the mistake that produces it. 708 explanations in all.

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KA-0162
3 points, difficulty 1 of 3Level 9–10not yet calibrated
Two towns are 300 km apart. A car leaves each town at the same moment driving toward the other, one at 60 km/h and the other at 90 km/h. How long until they meet?
MOD-03Rate, time, distancealso CFT-02, CFT-11

Browse the problems — Kangaroo Atlas