exam Maths Puzzle Numerical Ability

Change 40 kilometers to meters per hour.

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exam Other Question

How many gallons of cream that is 22% butterfat must be mixed with milk that is 2% buttermilk to get 20 gallons of milk containing 4% buttermilk? Add or Subtract as indicated. Express your result in simplest form.

2/5w + 10 - 3/2w - 4