book Maths Puzzle Numerical Ability

A rectangular tank is 90 cm by 700 mm by 4 m deep. Determine the number of cubic decimeters of water the tank holds. Show all work.

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book Other Question

Solve: 3^x * 9^-x =27^x A chef needs to mix a 45% fat content cheese with a 20% fat content cheese to obtain 30 grams of a cheese mixture that is 30% fat. How many grams of each kind of cheese must be used?