exam Maths Puzzle Numerical Ability

Two camper vans leave Arrowhead Lake at the same time, one traveling north at a speed of 10 km/h faster than the other, which is traveling south. After 3 hours, the camper vans are 420 km apart. Find their speeds.

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exam Other Question

what will be the unit digit of 4^432???? The Wildcats play 84 games this season. At midseason they had won 30 games. To win at least 60% of all games, how many of the reamaining games must they win?