exam Maths Puzzle Numerical Ability

mixed practice 20 page 689

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x y

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exam Other Question

the jones family drove to Disneyland at 50mph and returned on the same route at 40mph. Find the distance to Disneyland if the total driving time was 7.2hrs. How many milliliters of alcohol must be added to 200 milliliters of a 25% iodine solution to make a 10% iodine solution